Deleng sumberé Proxima Centauri

{{Starbox begin
| name=Proxima Centauri
}}
{{Starbox image
| image = [[Gambar:Position from Proxima Centauri.png|250px]]
| caption = Posisi Proxima Centauri
}}
{{Starbox observe
| epoch=[[J2000.0]]
| equinox=[[J2000.0]] ([[International Celestial Reference System|ICRS]])
| constell = [[Centaurus]]
| ra = {{RA|14|29|42.9487}}<ref name="SIMBAD">{{cite web
| url =http://simbad.u-strasbg.fr/simbad/sim-id?Ident=proxima%20centauri
| title =SIMBAD query result: V* V645 Cen -- Flare Star
| publisher =Centre de Données astronomiques de Strasbourg
| accessdate = 2008-08-11 }}—some of the data is located under "Measurements".</ref>
| dec = {{DEC|−62|40|46.141}}<ref name="SIMBAD" />
| appmag_v = 11,05<ref name="SIMBAD" />
}}
{{Starbox character
| class=M5.5&nbsp;Ve<ref name="SIMBAD" />
| b-v=1,90<ref name="SIMBAD" />
| u-b=1,43<ref name="SIMBAD" />
| variable=[[Lintang suar]]
}}
{{Starbox astrometry
| radial_v=−21,7&nbsp;±&nbsp;1,8<ref name=aaa379>{{cite journal
 | last=García-Sánchez | first=J.
 | author2=Weissman, P. R.; Preston, R. A.; Jones, D. L.; Lestrade, J.-F.; Latham, D. W.; Stefanik, R. P.; Paredes, J. M.
 | title=Stellar encounters with the solar system
 | journal=Astronomy and Astrophysics
 | year=2001 | volume=379 | pages=634–659
 | url=http://adsabs.harvard.edu/abs/2001A&A...379..634G
 | accessdate=2008-06-12
 | doi=10.1051/0004-6361:20011330 }}</ref>
| prop_mo_ra=−3775,40<ref name="SIMBAD" />
| prop_mo_dec=769,33<ref name="SIMBAD" />
| parallax=768.7
| p_error=0.3
| parallax_footnote=<ref name="apj118" />
| absmag_v=15,49<ref name="abs_mag">{{cite journal
 | last=Kamper | first=K. W. | author2=Wesselink, A. J.
 | title=Alpha and Proxima Centauri
 | journal=Astronomical Journal | year=1978
 | volume=83 | pages=1653–1659
 | url=http://adsabs.harvard.edu/abs/1978AJ.....83.1653K
 | accessdate=2008-08-03
 | doi=10.1086/112378 }}</ref>
}}
{{Starbox detail
| age=4,85{{Esp|9}}<ref name="ESO2003">{{cite news
 | author=Kervella, Pierre; Thevenin, Frederic
 | title=A Family Portrait of the Alpha Centauri System: VLT Interferometer Studies the Nearest Stars
 | publisher=ESO
 | date=2003-03-15
 | url=http://www.eso.org/public/outreach/press-rel/pr-2003/pr-05-03.html
 | accessdate=2007-07-09
 | archive-date=2008-06-16
 | archive-url=https://web.archive.org/web/20080616125016/http://www.eso.org/public/outreach/press-rel/pr-2003/pr-05-03.html
 | url-status=dead
 }}</ref>
| metal=<!-- assumed to be the same as Alpha Cen A/B -->
| mass=0,123&nbsp;±&nbsp;0,006<ref name=aaa397>{{cite journal
 | last=Ségransan | first=D.
 | author2=Kervella, P.; Forveille, T.; Queloz, D.
 | title=First radius measurements of very low mass stars with the VLTI
 | journal=Astronomy and Astrophysics | year=2003
 | volume=397 | pages=L5–L8
 | url=http://adsabs.harvard.edu/abs/2003A&A...397L...5S
 | accessdate=2008-08-07
 | doi=10.1051/0004-6361:20021714 }}</ref>
| radius=0,145&nbsp;±&nbsp;0,011<ref name=aaa397/>
| rotation=83,5&nbsp;hari<ref>{{cite journal
 | author=Benedict, G. Fritz | display-authors = etal
 | title=Photometry of Proxima Centauri and Barnard's Star Using Hubble Space Telescope Fine Guidance Sensor 3: A Search for Periodic Variations
 | journal=The Astronomical Journal
 | year=1998 | volume=116 | issue=1 | pages=429–439
 | url=http://adsabs.harvard.edu/abs/1998AJ....116..429B
 | accessdate=2007-07-09
 | doi=10.1086/300420 }}</ref>
| luminosity_bolometric=0,0017<ref name=lbol>See Table 1, {{cite journal
 | last=Doyle | first=J. G. | author2=Butler, C. J.
 | title=Optical and infrared photometry of dwarf M and K stars
 | journal=Astronomy and Astrophysics | year=1990
 | volume=235 | pages=335–339
 | bibcode=1990A&A...235..335D}} and p. 57, {{cite book
 | title=Principles of Physical Cosmology
 | last=Peebles | first=P. J. E.
 | year=1993
 | location=Princeton, New Jersey
 | publisher=Princeton University Press
 | isbn=0691019339
}}</ref>
| temperature=3,042&nbsp;±&nbsp;117<ref name=aaa397/>
| gravity=5,20&nbsp;±&nbsp;0,23<ref name=aaa397/>
}}
{{Starbox catalog
| names = [[Bayer designation|Alpha Centauri C]], [[Catalog of Components of Double and Multiple Stars|CCDM]]&nbsp;J14396-6050C, [[General Catalogue of Trigonometric Parallaxes|GCTP]]&nbsp;3278.00, [[Gliese-Jahreiss catalogue|GJ]]&nbsp;551, [[Hipparcos catalogue|HIP]]&nbsp;70890, [[Luyten Five-Tenths catalogue|LFT]]&nbsp;1110, [[Luyten Half-Second catalogue|LHS]]&nbsp;49, [[Luyten Proper-Motion catalogue|LPM]]&nbsp;526, [[Luyten Two-Tenths catalogue|LTT]]&nbsp;5721, [[New Luyten Two-Tenths catalogue|NLTT]]&nbsp;37460, [[Variable star designation|V645 Centauri]]<ref name="SIMBAD" />
}}
{{Starbox reference
| Simbad = V645+Cen
| ARICNS = <!--Code-->
}}
{{Starbox end}}

'''Proxima Centauri'''<ref>{{cite web
 | url=http://www.jact.org/subjects/vocablist.htm
 | title=Latin Resources
 | publisher=Joint Association of Classical Teachers
 | accessdate=2007-07-15
 | archive-date=2007-07-08
 | archive-url=https://web.archive.org/web/20070708174244/http://www.jact.org/subjects/vocablist.htm
 | url-status=dead
 }}</ref> iku [[lintang]] kate abang kang manggon adohé 4,2 taun cahya (3,97{{e|13}} km). Lintang iki ana ing rasi lintang [[Centaurus]]. Proxima Centauri tinemu nalika taun 1915 déning Robert Innes, Dirèktur Observatorium Union ing [[Afrika Kidul|Aprikah Kidul]]. Lintang iki wujud lintang paling cerak saka [[srengéngé]],<ref name="ESO2003">{{cite news
 | author=Kervella, Pierre; Thevenin, Frederic
 | title=A Family Portrait of the Alpha Centauri System: VLT Interferometer Studies the Nearest Stars
 | publisher=ESO
 | date=2003-03-15
 | url=http://www.eso.org/public/outreach/press-rel/pr-2003/pr-05-03.html
 | accessdate=2007-07-09
 | archive-date=2008-06-16
 | archive-url=https://web.archive.org/web/20080616125016/http://www.eso.org/public/outreach/press-rel/pr-2003/pr-05-03.html
 | url-status=dead
 }}</ref> sanajan mbleret banget kanggo dideleng nganggo mata langsung. Leté menyang lintang paling cerak kaloro lan katelu (kang tatalaku [[lintang gandha]] [[Alpha Centauri]]) yaiku 0,237&nbsp;±&nbsp;0,011&nbsp;taun cahya (15.000&nbsp;±&nbsp;700 ékan astronomi).<ref name="apj132">{{cite journal
 | author=Wertheimer, Jeremy G.; Laughlin, Gregory
 | title=Are Proxima and α Centauri Gravitationally Bound?
 | journal=The Astronomical Journal
 | year=2006 | volume=132 | issue=5 | pages=1995–1997
 | url=http://adsabs.harvard.edu/abs/2006astro.ph..7401W
 | accessdate=2007-07-09 | doi = 10.1086/507771
}}</ref> Proxima Centauri kamungkinan wujud péranganing tatalaku lintang telu bebarengan karo Alpha Centauri A lan B.

Amarga kacerakané, dhiameter pojok lintang iki bisa diukur kanthi langsung, yaiku watara 1/7 saka srengéngé.<ref name="ESO2003"/> Bobot isen Proxima Centauri diprakirakaké watara 1/8 saka srengéngé, sauntara rata-rata bobot jinisé watara kaping 40é srengéngé.<ref group="nb" name="density" /> Sanajan duwé drajat luminositas kang asor, Proxima iku lintang suar kang ngalami paningkatan kacerahan minangka akibat saka kamobahan mahnitjati.<ref name=apj612>{{cite journal
 | last=Christian | first=D. J.
 | author2=Mathioudakis, M.; Bloomfield, D. S.; Dupuis, J.; Keenan, F. P.
 | title=A Detailed Study of Opacity in the Upper Atmosphere of Proxima Centauri
 | journal=The Astrophysical Journal
 | year=2004 | volume=612 | issue=2 | pages=1140–1146
 | url=http://adsabs.harvard.edu/abs/2004ApJ...612.1140C
 | accessdate=2008-06-13
 | doi=10.1086/422803 }}</ref> Médhan mahnit lintang iki kawangun liwat [[konvèksi]] ing badan lintang, lan marakake kamobahan semburan kang ngetokaké piwetu sinar X.<ref name=apj547/> Pacampuran "bahan obong" ing inti Proxima Centauri liwat konvèksi lan drajat prodhuksi ènèrgi lintang kang rélatif asor nuduhaké yèn lintang iki kamungkinan bakal tetep dadi lintang [[dhèrèt utama]] suwéné patang trilyun taun sabanjuré.<ref name=adams/><ref name="NASA">{{cite web
 | author=Dunkley, J. | display-authors = etal
 | title = Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
 | url =http://arxiv.org/abs/0803.0586
 | publisher=NASA | accessdate=2008-03-06 }}</ref>

Panggolèkan bandha langit pangiring Proxima Centauri ora olèh kasil. Kamungkinan anané [[katé coklat]] lan [[raksasa gas|raseksa gas]] wis dibusak.<ref name="aaal344">{{cite journal
 | author=Kürster, M. | display-authors = etal
 | title=Precise radial velocities of Proxima Centauri. Strong constraints on a substellar companion
 | journal=Astronomy & Astrophysics Letters
 | year=1999 | volume=344 | pages=L5–L8
 | url=http://arxiv.org/abs/astro-ph/9903010v1
 | bibcode=1999A&A...344L...5K
 | accessdate=2008-12-19 }}</ref> Drajat kamobahan lintang nambah riricuh marang pangukuran karikatan radhial, saéngga matesi prospèk panemon objèk pangorbit.<ref name="Saar 1997 319–326">{{cite journal
 | last=Saar | first=Steven H.
 | author2=Donahue, Robert A.
 | title=Activity-related Radial Velocity Variation in Cool Stars
 | journal=Astrophysical Journal
 | year=1997 | volume=485 | pages=319–326
 | url=http://adsabs.harvard.edu/abs/1997ApJ...485..319S
 | accessdate=2008-07-11
 | doi=10.1086/304392 }}</ref><ref name=apj119/> Paninjoan [[karikatan radhial]] uga nyingkiraké kamungkinan anané [[bumi super]] ing [[zona layak huni|laladan pantes panggon]] Proxima Centauri.<ref name=tarter>{{cite journal
 | author=Tarter, Jill C. | display-authors = etal
 | title=A Reappraisal of The Habitability of Planets around M Dwarf Stars
 | journal=Astrobiology | year=2007 | volume=7 | issue=1
 | pages=30–65 | doi=10.1089/ast.2006.0124
 | pmid=17407403 }}</ref><ref name=Khodachenko>{{cite journal
 | author=Khodachenko, Maxim L. | display-authors = etal
 | title=Coronal Mass Ejection (CME) Activity of Low Mass M Stars as An Important Factor for The Habitability of Terrestrial Exoplanets. I. CME Impact on Expected Magnetospheres of Earth-Like Exoplanets in Close-In Habitable Zones
 | journal=Astrobiology | year=2007
 | volume=7 | issue=1 | pages=167–184
 | doi=10.1089/ast.2006.0127
 | pmid=17407406
}}</ref><ref name="aaa488">{{cite journal|title=Toward detection of terrestrial planets in the habitable zone of our closest neighbor: Proxima Centauri|author=Endl, M. and Kürster, M.|year=2008|journal=[[Astronomy and Astrophysics]]|volume=488|issue=3|pages=1149–1153|doi=10.1051/0004-6361:200810058|bibcode=2008A&A...488.1149E}}</ref><ref group="nb" name="m_sin_i">Sabeneré ana watesan marang pangaji ''m'' sin ''i'', karo i yaiku pojok antarané garis normal orbit karo garis deleng. Yèn orbit planit cerak karo ''face-on'' kaya déné dideleng saka Bumi, planit-planit kang luwih masif bisa lolos saka pandhètèksian kang migunakaké métodhe karikatan radhial.</ref> Panggolèkan bandha-bandha langit kang luwih cilik merlokaké piranti-piranti anyar, kaya ta [[teleskop luar akasa James Webb|teleskop antariksa James Webb]].<ref name="numbers"/> Amarga kacerakané karo Bumi, lintang iki wis diusulaké minangka pituju saka [[panjlajahan antarlintang]].<ref name=gilster>{{cite book
 | first=Paul | last=Gilster | year=2004
 | title=Centauri Dreams: Imagining and Planning
 | publisher=Springer | isbn=038700436X }}</ref>

== Pangamatan ==
Nalika taun 1915, [[Robert Innes]], Dhirèktur [[Observatorium Union]] ing [[Johannesburg]], [[Afrika Kidul]], nemu lintang kang duwé [[obah dhiri]] kang padha karo [[Alpha Centauri]].<ref name=afrsky11_39>{{cite journal
 | last=Glass | first=I. S. |date=July 2007
 | title=The Discovery of the Nearest Star
 | journal=African Sky | volume=11 | page=39
 | bibcode=2007AfrSk..11...39G
}}</ref><ref name="ESO2002">{{cite web | first=Didier | last=Queloz | date=2002-11-29 | url=http://www.eso.org/outreach/press-rel/pr-2002/pr-22-02.html | title=How Small are Small Stars Really? VLT Interferometer Measures the Size of Proxima Centauri and Other Nearby Stars | publisher=European Southern Observatory | accessdate=2007-07-09 | archive-date=2007-01-03 | archive-url=https://web.archive.org/web/20070103234953/http://www.eso.org/outreach/press-rel/pr-2002/pr-22-02.html | url-status=dead }}</ref> Dhèwèké mènèhi jeneng lintang iku ''Proxima Centauri''.<ref name=aj39_913_20>{{cite journal
 | last=Alden | first=Harold L.
 | title=Alpha and Proxima Centauri
 | journal=Astronomical Journal
 | year=1928 | volume=39 | issue=913 | pages=20–23
 | url=http://adsabs.harvard.edu/abs/1928AJ.....39...20A
 | accessdate=2008-06-28
 | doi=10.1086/104871 }}</ref> Nalika taun 1917, ing [[Royal Observatory, Tanjung Harapan|Royal Observatory]], [[Tanjung Harapan]], astronom Walanda [[Joan Voûte]] ngukur [[paralaks]] trigonometrik lintang iki, lan ngonfirmasi yèn Proxima Centauri duwé let saka srengéngé kang padha karo Alpha Centauri. Lintang iki uga ditepungi minangka lintang kanthi [[luminositas]] paling asor ing wektu iku.<ref>{{cite journal
 | last = Voûte | first = J.
 | title=A 13th magnitude star in Centaurus with the same parallax as α Centauri
 | journal=Monthly Notices of the Royal Astronomical Society
 | year=1917 | volume=77 | pages=650–651
 | url=http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1917MNRAS..77..650V&amp;db_key=AST&amp;data_type=HTML&amp;format=&amp;high=444c5eb29022736
 | accessdate=2007-07-09 }}</ref> Panemton paralaks Proxima Centauri kang akurat digawé déning astronom Amérikah Sarékat [[Harold Lee Alden|Harold L. Alden]] nalika taun 1928. Dhèwèké ngonfirmasi asil awal mawa paralaks {{nowrap|0,783 ± 0,005}}″.<ref name=afrsky11_39/><ref name=aj39_913_20/>

Astronom Amérikah Sarékat [[Harlow Shapley]] mbiwara Proxima Centauri minangka [[lintang suar]] nalika taun 1951. Pamriksan marang cathetan-cathetan fotografik sadurungé nuduhaké yèn lintang iki ngalami paningkatan sajeroning magnitudo watara 8%, ndadèkaké minangka lintang suar paling aktif ing wektu iku.<ref>{{cite journal
 | last = Shapley | first = Harlow
 | title=Proxima Centauri as a Flare Star
 | journal=Proceedings of the National Academy of Sciences of the United States of America
 | year=1951 | volume=37 | issue=1 | pages=15–18
 | url=http://adsabs.harvard.edu/abs/1951PNAS...37...15S
 | accessdate=2007-07-11 | doi=10.1073/pnas.37.1.15
 | pmid = 16588985
 | pmc = 1063292 }}</ref> Kacerakan lintang iki mungkinaké pangamatan marang aktivitas semburanné. Nalika taun 1980, [[Observatorium Einstein]] gawé kurva ènèrgi sinar X ing semburan Proxima Centauri. Pangamatan luwih jero dilakokaké liwat satelit [[EXOSAT]] lan [[ROSAT]]. Emisi sinar X kanthi semburan kang luwih cilik lan mèmper karo srengéngé diamati déning satelit [[Advanced Satellite for Cosmology and Astrophysics|ASCA]] Jepang taun 1995.<ref>{{cite journal
 | last=Haisch | first=Bernhard
 | author2=Antunes, A.; Schmitt, J. H. M. M.
 | title=Solar-Like M-Class X-ray Flares on Proxima Centauri Observed by the ASCA Satellite
 | journal=Science | year=1995
 | volume=268 | issue=5215 | pages=1327–1329
 | doi=10.1126/science.268.5215.1327
 | pmid=17778978 }}</ref> Proxima Centauri kawit wektu iku dadi subjèk panlitèn déning manéka observatorium sinar X, kaya ta [[XMM-Newton]] lan [[Observatorium sinar-X Chandra|Chandra]].<ref name=aaa416/>

Amarga [[dhéklinasi]] kidul Proxima Centauri, lintang iki mung bisa dideleng ing sisih kidul lintang 27°&nbsp;U.<ref group="nb">Kanggo lintang ing sisih kidul zènit, pojokan marang zènit padha karo garis lintang dikurang dhéklinasi. Lintang kadhelikaké saka papan kanthi pojok zènit gedhéné 90° utawa luwih, utawa sajeroning tembung liya sangisoré cakrawala. Mula, kanggo Proxima Centauri:
:Lintang paling dhuwur = 90° + −62,68° = 27,32°.
Delengen: {{cite book
 | first=William Wallace | last=Campbell
 | year=1899 | title=The Elements of Practical Astronomy
 | publisher=Macmillan | location=London
 | url=http://books.google.com/?id=v2tEAAAAIAAJ
 | accessdate=2008-08-12 }}</ref> Katé abang kaya Proxima Centauri mbleret banget kanggo dideleng kanthi mata langsung.<ref>{{cite web
 | url =http://sdc.cab.inta-csic.es/ines/Ines_PCentre/Demos/Fluxdist/pcentauri.html
 | title =Proxima Centauri UV Flux Distribution
 | publisher =ESA/Laboratory for Space Astrophysics and Theoretical Physics
 | accessdate = 2007-07-11
}}</ref><ref>{{cite web
 | first=Jim | last=Kaler | title=Rigil Kentaurus
 | url=http://www.astro.uiuc.edu/~kaler/sow/rigil-kent.html
 | publisher=University of Illinois
 | accessdate=2008-08-03 }}</ref> Lintang iki duwé [[magnitudo semu]] gedhéné 11, saéngga diperlokaké teleskop mawa [[tingkap]] minimal 8&nbsp;cm (3,1&nbsp;[[inch|in.]]) kanggo ngamati lintang iki.<ref>{{cite book
 | first=P. Clay | last=Sherrod
 | author2=Koed, Thomas L.; Aleichem, Thomas L. Sholem
 | year=2003 | title=A Complete Manual of Amateur Astronomy: Tools and Techniques for Astronomical Observations
 | publisher=Courier Dover Publications
 | isbn=0486428206 }}</ref>

== Karakteristik ==
Proxima Centauri diklasifikasikakè minangka lintang katé abang amarga lumebu sanjeroné [[dhèrèt utama]] ing [[diagram Hertzsprung–Russell]] lan kagolong sajeroning [[klasifikasi lintang|kelas M5.5]]. Lintang iki duwé [[magnitudo mutlak]] gedhéné 15,5.<ref name="abs_mag">{{cite journal
 | last=Kamper | first=K. W. | author2=Wesselink, A. J.
 | title=Alpha and Proxima Centauri
 | journal=Astronomical Journal | year=1978
 | volume=83 | pages=1653–1659
 | url=http://adsabs.harvard.edu/abs/1978AJ.....83.1653K
 | accessdate=2008-08-03
 | doi=10.1086/112378 }}</ref> Gunggung luminositas tumrap kabèh [[dawa gelombang]]é yaiku 0,17% saka srengéngé,<ref name=lbol>See Table 1, {{cite journal
 | last=Doyle | first=J. G. | author2=Butler, C. J.
 | title=Optical and infrared photometry of dwarf M and K stars
 | journal=Astronomy and Astrophysics | year=1990
 | volume=235 | pages=335–339
 | bibcode=1990A&A...235..335D}} and p. 57, {{cite book
 | title=Principles of Physical Cosmology
 | last=Peebles | first=P. J. E.
 | year=1993
 | location=Princeton, New Jersey
 | publisher=Princeton University Press
 | isbn=0691019339
}}</ref> sanajan nalika diamati sajeroning dawa gelombang [[spèktrum optik]] mung 0.0056% saka srengéngé.<ref>p. 8, {{cite book
 | last=Binney | first=James
 | author2=Scott Tremaine
 | title=Galactic Dynamics
 | publisher=Princeton University Press
 | location=Princeton, New Jersey
 | year=1987
 | isbn=0691084459}}</ref> Luwih saka 85% saka daya kang kapancaraké yaiku dawa gelombang [[infraabang]].<ref>kaca. 357, {{cite journal
 | last=Leggett | first=S. K.
 | title=Infrared colors of low-mass stars
 | journal=Astrophysical Journal Supplement Series
 | year=1992 | volume=82 | issue=1 | pages=351–394
 | url=http://adsabs.harvard.edu/abs/1992ApJS...82..351L
 | accessdate=2008-08-13
 | doi=10.1086/191720 }}</ref>

[[File:Alpha centauri size.svg|right|thumb|280px|Perbandhingan ukuran antarané srengéngé, [[Alpha centauri|α Centauri A, α Centauri B]], lan Proxima Centauri]]

Nalika taun 2002, [[interferometri optik]] ing [[Very Large Telescope]] (VLTI) nemu yèn Proxima Centauri duwé [[dhiameter pojok]] watara 1,02&nbsp;±&nbsp;0,08 [[menit busur|mili dhetik busur]]. Amarga leté wis dikawruhi, dhiameter sebeneré bisa diprakirakaké, yaiku watara 1/7 srengéngé, utawa kaping 1,5 [[Yupiter]].<ref name="ESO2002"/> Massa lintang iki diprakirakaké watara 12,3% saka [[massa srengéngé]], utawa kaping 129 [[massa Yupiter]].<ref name="ESO2003"/> Rata-rata massa jinis lintang dhèrèt utama mundhak sairing karo kurangé massa,<ref>{{cite book
 | first=Martin V. | last=Zombeck | year=2007
 | title=Handbook of Space Astronomy and Astrophysics
 | publisher=Cambridge University Press
 | edition=Third | pages=109
 | location=Cambridge, UK | isbn=0521782422 }}</ref> lan Proxima Centauri dudu pangecualian: lintang iki duwé rata-rata massa jinis watara 56.800&nbsp;kg/m<sup>3</sup> (56,8&nbsp;g/cm<sup>3</sup>), sauntara srengéngé watara 1.409&nbsp;kg/m<sup>3</sup> (1,409&nbsp;g/cm<sup>3</sup>).<ref group="nb" name="density">Massa jinis (''ρ'') wujud massa dibagi volume. Gegandhèngan karo srengéngé, massa jinis Proxima Centauri yaiku:
:{|
|<math>\rho</math>
|= <math>\begin{smallmatrix}\frac{M}{M_{\odot}} \cdot \left( \frac{R}{R_{\odot}} \right)^{-3} \cdot \rho_{\odot}\end{smallmatrix}</math>
|-
| ||= 0,123 · 0,145<sup>−3</sup> · 1,41{{Esp|3}}&nbsp;kg/m<sup>3</sup>
|-
| ||= 40,3 · 1,41{{Esp|3}}&nbsp;kg/m<sup>3</sup>
|-
| ||= 5,68{{Esp|4}}&nbsp;kg/m<sup>3</sup>
|}
kanthi <math>\begin{smallmatrix}\rho_{\odot}\end{smallmatrix}</math> iku rata-rata massa jinis srengéngé.
Delengen:
*{{cite web
 | authors=Munsell, Kirk; Smith, Harman; Davis, Phil; Harvey, Samantha
 | date=2008-06-11
 | url=http://solarsystem.nasa.gov/planets/profile.cfm?Object=Sun&Display=Facts&System=Metric
 | title=Sun: Facts & Figures
 | work=Solar System Exploration
 | publisher=NASA
 | accessdate=2008-07-12
 | archive-date=2008-01-02
 | archive-url=https://web.archive.org/web/20080102034758/http://solarsystem.nasa.gov/planets/profile.cfm?Object=Sun&Display=Facts&System=Metric
 | url-status=dead
 }}
*{{cite book
 | author=Bergman, Marcel W.; Clark, T. Alan; Wilson, William J. F. | year=2007 | pages=220–221
 | title=Observing Projects Using Starry Night Enthusiast
 | edition=8 | publisher=Macmillan | isbn=142920074X }}</ref>

Amarga massané kang asor, pérangan njero lintang iki sepenuhé [[zona konvèksi|konvèktif]], saéngga ènèrgi ditransfer menyang pérangan njaba liwat pagerakan fisis plasma, lan dudu liwat [[zona radhiasi|prosès radhiatif]]. Konvèksi iki ateges yèn awu hélium kang ditinggalaké saka [[fusi termonuklir]] hidrogen ora kaakumulasi ing inti, nanging diédharaké menyang kabèh lintang. Ora kaya srengéngé, kang mung bakal ngobong watara 10% saka kabèh hidrogené sadurungé ninggal dhèrèt utama, Proxima Centauri bakal ngentèkaké kabèh "bahan bakar"é sadurungé fusi hidrogen rampung.<ref name=adams/>

Konvèksi gegandhèngan karo pangasilan [[médhan magnèt lintang|médhan magnèt]]. Ènèrgi magnètik saka médhan iki diculaké menyang lumah liwat [[semburan lintang]] kang ngundhakaké luminositas lintang ing sajeroning wektu kang cendhak. Semburan-semburan mau bisa tuwuh nganti padha gehdéné karo lintang lan bisa nggayuh suhu dhuwuré 27&nbsp;yuta [[Kelvin|K]]<ref name=aaa416>{{cite journal
 | last=Guedel | first=M.
 | author2=Audard, M.; Reale, F.; Skinner, S. L.; Linsky, J. L.
 | title=Flares from small to large: X-ray spectroscopy of Proxima Centauri with XMM-Newton
 | journal=Astronomy and Astrophysics | year=2004
 | volume=416 | pages=713–732
 | url=http://arxiv.org/abs/astro-ph/0312297
 | accessdate=2008-07-11
 | doi=10.1051/0004-6361:20031471 }}</ref>—cukup panas kanggo ngradhiasi [[sinar X]].<ref>{{cite web
 | author=Staff | date =2006-08-30
 | url =http://chandra.harvard.edu/photo/2004/proxima/
 | title =Proxima Centauri: The Nearest Star to the Sun
 | publisher =Harvard-Smithsonian Center for Astrophysics
 | accessdate = 2007-07-09 }}</ref> Luminositas sinar X lintang iki kang meneng (kira-kira watara (4–16){{Esp|26}}&nbsp;[[erg]]/s ((4–16){{Esp|19}}&nbsp;[[watt|W]])) kanthi kasar sithik luwih cilik saka srengéngé. Luminositas sinar X pucuk ing semburan gedhé dhéwé bisa nggayuh 10<sup>28</sup>&nbsp;erg/s (10<sup>21</sup> W.)<ref name=aaa416/>

[[Kromosfer]] lintang iki aktif, lan [[spektrum]]é nuduhaké [[garis spèktral|garis émisi]] [[magnesium]] karionisasi kang kuwat ing dawa gelombang 280&nbsp;[[Nanometer|nm]].<ref>{{cite journal
 | first=Guinan | last=E. F. | author2=Morgan, N. D.
 | title=Proxima Centauri: Rotation, Chromosperic Activity, and Flares
 | journal=Bulletin of the American Astronomical Society
 | year=1996 | volume=28 | pages=942
 | url=http://adsabs.harvard.edu/abs/1996BAAS...28S.942G
 | accessdate=2008-06-14 }}</ref> Watara 88% lumah Proxima Centauri mungkin aktif. Persentase iki luwih dhuwur tinimbang srengéngé, malah nalika ana sajeroning pucuk [[siklus srengéngé|siklusé]]. Ing periodhe meneng kanthi sithik utawa ora ana semburan, aktivitasé ngundhakaké suhu [[korona]] Proxima Centauri dadi 3,5&nbsp;yuta K (sauntara srengéngé mung 2&nbsp;juta K).<ref>{{cite journal
 | last=Wargelin | first=Bradford J.
 | author2=Drake, Jeremy J.
 | title=Stringent X-Ray Constraints on Mass Loss from Proxima Centauri
 | journal=The Astrophysical Journal | year=2002
 | volume=578 | pages=503–514
 | doi=10.1086/342270 }}</ref> Nanging, tingkat aktivitas lintang iki dianggep asor yèn dibandhingaké karo katé kelas M liyané,<ref name=apj547>{{cite journal
 | author=Wood, B. E.; Linsky, J. L.; Müller, H.-R.; Zank, G. P.
 | title=Observational Estimates for the Mass-Loss Rates of α Centauri and Proxima Centauri Using Hubble Space Telescope Lyα Spectra
 | journal=The Astrophysical Journal | year=2001
 | volume=547 | issue=1 | pages=L49–L52
 | url=http://iopscience.iop.org/1538-4357/547/1/L49/pdf/1538-4357_547_1_L49.pdf
 | accessdate=2007-07-09
 | doi=10.1086/318888 }}</ref> kang selaras karo prakiran umur lintang iki, yaiku 4,85{{Esp|9}}&nbsp;taun.<ref name="ESO2003"/> (tingkat aktivitas katé abang diprakirakaké alon-alon saya pudhar suwéné miliyaran taun kanthi saya kurangé tingkat [[rotasi lintang]]).<ref>{{cite journal
 | last=Stauffer | first=J. R. | author2=Hartmann, L. W.
 | title=Chromospheric activity, kinematics, and metallicities of nearby M dwarfs
 | journal=Astrophysical Journal Supplement Series
 | year=1986 | volume=61 | issue=2 | pages=531–568
 | url=http://articles.adsabs.harvard.edu/abs/1986ApJS...61..531S
 | accessdate=2008-06-29
 | doi=10.1086/191123 }}</ref> Tingkat kaaktifan uga duwé variasi ing periodhe (kasar) 442 dina, kang luwih cendhèk saka [[siklus srengéngé]] (11 taun).<ref>{{cite journal
 | author=Cincunegui, C.; Díaz, R. F.; Mauas, P. J. D.
 | title=A possible activity cycle in Proxima Centauri
 | journal=Astronomy and Astrophysics | year=2007
 | volume=461 | issue=3 | pages=1107–1113
 | url=http://adsabs.harvard.edu/abs/2007A&A...461.1107C
 | accessdate=2007-07-11
 | doi = 10.1051/0004-6361:20066027 }}</ref>

Proxima Centauri duwé [[angin lintang]] kang rélatif lemah, saéngga laju pamedhunan massané ora punjul 20% laju pamedhunan massa srengéngé (kang disebabaké amarga [[angin srengéngé]]). Ing sisih liya, amarga lintang iki luwih cilik saka srengéngé, laju pamedhunan massa per ékan wiyar lumah saka Proxima Centauri mungkin kaping wolu luwih gedhé saka lumah srengéngé.<ref>{{cite journal
 | last=Wood | first=B. E.
 | author2=Linsky, J. L.; Muller, H.-R.; Zank, G. P.
 | title=Observational Estimates for the Mass-Loss Rates of Alpha Centauri and Proxima Centauri Using Hubble Space Telescope Lyman-alpha Spectra
 | journal=Astrophysical Journal | year=2000
 | volume=537 | issue=2 | pages=L49–L52
 | url=http://arxiv.org/abs/astro-ph/0011153
 | accessdate=2008-07-11
 | doi=10.1086/309026 }}</ref>

Katé abang kanthi massa kaya Proxima Centauri bakal tetep dadi lintang dhèrèt utama suwéné patang triliun taun. Sauntara proporsi hélium mundhak amarga fusi hidrogen, lintang iki bakal dadi luwih cilik lan panas, saya suwé malih saka abang dadi biru. Nyeraki akir periodhe iki, Proxima Centauri bakal dadi luwih mengkileng (nggayuh 2,5% luminositas srengéngé), lan uga ngangetaké bandha-bandha langit kang ngupengi suwéné miliaran taun. Nalika bahan bakar hidrogen entèk, Proxima Centauri bakal malih dadi [[katé putih]] (tanpa liwat tahap [[raksasa abang]]) lan alon-alon kélangan sisa ènèrgi panasé.<ref name=adams>{{cite conference
 | last=Adams
 | first=Fred C.
 | author2=Laughlin, Gregory; Graves, Genevieve J. M
 | title=Red Dwarfs and the End of the Main Sequence
 | book-title=Gravitational Collapse: From Massive Stars to Planets
 | pages=46–49
 | publisher=Revista Mexicana de Astronomía y Astrofísica
 | url=http://www.astroscu.unam.mx/rmaa/RMxAC..22/PDF/RMxAC..22_adams.pdf
 | accessdate=2008-06-24
 | archive-date=2019-07-11
 | archive-url=https://web.archive.org/web/20190711072446/http://www.astroscu.unam.mx/rmaa/RMxAC..22/PDF/RMxAC..22_adams.pdf
 | url-status=dead
 }}</ref>

=== Let lan pagerakan ===
<!-- Astrometri -->
Adhedasar [[paralaks]] {{nowrap|768,7 ± 0,3}} [[menit busur|mili dhetik busur]], kang diukur kanthi migunakaké [[Fine Guidance Sensors]] ing [[teleskop njaba akasa Hubble]],<ref name="apj118">{{cite journal
 | author=Benedict, G. Fritz | display-authors = etal
 | title=Interferometric Astrometry of Proxima Centauri and Barnard's Star Using HUBBLE SPACE TELESCOPE Fine Guidance Sensor 3: Detection Limits for Substellar Companions
 | journal=The Astronomical Journal
 | year=1999 | volume=118 | issue=2 | pages=1086–1100
 | url=http://adsabs.harvard.edu/abs/1999astro.ph..5318B
 | accessdate=2007-07-21
 | doi=10.1086/300975 }}</ref> Proxima Centauri mapan adohé 4,2&nbsp;taun cahya. Saka titik deleng apik (''vantage point'') bumi, Proxima kapisah 2,18°<ref name=apj121>{{cite journal
 | author=Kirkpatrick, J. Davy | display-authors = etal
 | title=Brown Dwarf Companions to G-type Stars. I: Gliese 417B and Gliese 584C
 | journal=The Astronomical Journal
 | year=1999 | volume=121 | pages=3235–3253
 | url=http://arxiv.org/abs/astro-ph/0103218
 | accessdate=2008-06-23
 | doi=10.1086/321085 }}</ref> saka Alpha Centauri, utawa kaping papat [[dhiameter pojok]] [[rembulan]].<ref>{{cite web
 | last=Williams | first=D. R. | date=2006-02-10
 | url=http://nssdc.gsfc.nasa.gov/planetary/factsheet/moonfact.html
 | title=Moon Fact Sheet | publisher=NASA
 | accessdate=2007-10-12 }}</ref> Proxima uga duwé [[obah dhiri]] kang gedhé - obah 3,85 [[arcsecond]] per taun ing langit.<ref>{{cite conference
 | author=Benedict, G. F. | display-authors = etal
 | title =Astrometric Stability and Precision of Fine Guidance Sensor #3: The Parallax and Proper Motion of Proxima Centauri
 | book-title =Proceedings of the HST Calibration Workshop
 | pages =380–384
 | url =http://clyde.as.utexas.edu/SpAstNEW/Papers_in_pdf/%7BBen93%7DEarlyProx.pdf
 |format=PDF| accessdate = 2007-07-11 }}</ref> Lintang iki duwé [[karikatan radhial]] gedhéné 21,7&nbsp;km/s marang srengéngé.<ref name="SIMBAD">{{cite web
| url =http://simbad.u-strasbg.fr/simbad/sim-id?Ident=proxima%20centauri | work=SIMBAD
| title =SIMBAD query result: V* V645 Cen – [[Flare Star]]
| publisher =Centre de Données astronomiques de Strasbourg
| accessdate = 2008-08-11 }}—some of the data is located under "Measurements".</ref>

<!-- Pagerakan liwat angkasa -->
Ing antarané lintang-lintang kang wis ditepungi, Proxima Centauri wis dadi lintang paling cerak saka srengéngé suwéné 32.000&nbsp;taun, lan bakal tetep dadi kang paling cerak suwéné 33.000&nbsp;taun sabanjuré. Sawisé iku, posisi lintang paling cerak bakal digantèkaké déning [[Ross 248]].<ref name="qjras35">{{cite journal
 | last=Matthews | first=R. A. J.
 | title=The Close Approach of Stars in the Solar Neighborhood
 | journal=Quarterly Journal of the Royal Astronomical Society
 | year=1994 | volume=35 | pages=1–9
 | bibcode=1994QJRAS..35....1M }}</ref> Proxima bakal ana ing posisi paling cerak karo srengéngé watara 3,11&nbsp;taun cahya manèh, utawa watara 26.700&nbsp;taun.<ref name=aaa379>{{cite journal
 | last=García-Sánchez | first=J.
 | author2=Weissman, P. R.; Preston, R. A.; Jones, D. L.; Lestrade, J.-F.; Latham, D. W.; Stefanik, R. P.; Paredes, J. M.
 | title=Stellar encounters with the solar system
 | journal=Astronomy and Astrophysics
 | year=2001 | volume=379 | pages=634–659
 | url=http://adsabs.harvard.edu/abs/2001A&A...379..634G
 | accessdate=2008-06-12
 | doi=10.1051/0004-6361:20011330 }}</ref> Lintang iki ngorbit liwat [[Bimasekti]] sajeroning kisaran let antara 8,3 nganti 9,5&nbsp;[[Parsec|kpc]] saka [[punjer galaksi]], lan mawa [[eksentrisitas orbit]] gedhéné 0,07.<ref>{{cite journal
 | last=Allen | first=C. | author2=Herrera, M. A.
 | title=The galactic orbits of nearby UV Ceti stars
 | journal=Revista Mexicana de Astronomia y Astrofisica
 | year=1998 | volume=34 | pages=37–46
 | url=http://adsabs.harvard.edu/abs/1998RMxAA..34...37A
 | accessdate=2008-06-13 }}</ref>

<!-- Kamungkinan orbit -->
Kawit panemonané, lintang iki dinuga minangka pangiring sebeneré saka sistem [[lintang gandha]] Alpha Centauri. Kanthi let adohé 0,21&nbsp;[[taun cahya]] (15.000&nbsp;±&nbsp;700 [[ékan astronomi|SA]]) saka Alpha Centauri,<ref name="apj132" /> Proxima Centauri mungkin ngorbit Alpha Centauri, kanthi [[periodhe orbit]] 500.000&nbsp;taun utawa luwih. Mula, Proxima sok-sok dijuluki minangka Alpha Centauri C. Prakiran modhèren nduga yèn kamungkinan kaselarasan kang diamati minangka sawijining kebeneran wujud siji bandhing sayuta.<ref>{{cite journal
 | last = Matthews, Robert; Gilmore, Gerard
 | title = Is Proxima really in orbit about Alpha CEN A/B?
 | journal = MNRAS | volume = 261 | pages = L5 | year = 1993
 | url = http://adsabs.harvard.edu/abs/1993MNRAS.261L...5M}}</ref> Dhata saka satelit [[Hipparcos]], ditambah karo pangamatan, konsistèn kanthi hipotèsis yèn telu lintang iki wujud sawijining sistem kang kaiket. Yèn bener, Proxima bakal ana cerak [[apsis|apastron]], titik paling adoh saka orbité ing sistem Alpha Centauri. Pangukuran karikatan radhial kang luwih akurat dibutuhaké kanggo mesthèkaké hipotèsis iki.<ref name="apj132" />

Yèn Proxima kaiket karo sistem Alpha Centauri suwéné pambentukané, lintang iki kamungkinan duwé komposisi kimia kang padha. Prabawa gravitasi Proxima manawa uga wis nggolakaké ''[[protoplanetary disk]]'' Alpha Centauri, saéngga ngundhakaké pangenteran ''[[volatile]]'' kaya déné banyu menyang wewengkon njero kang garing. [[Planit kabumian]] ngendi waé ing sistem iki bakal ngandhut bahan-bahan mau.<ref name="apj132" />

Enem lintang tunggal, loro sistem lintang gandhèa, lan lintang telu rerangkèn duwé pagerakan kang mèmper karo Proxima Centauri lan sistem Alpha Centauri. [[Kinematika lintang|Kacepetan]] lintang-lintang mau diprakirakaké ana sajeroning kisaran 10&nbsp;km/s saka [[obah peculiar]] Alpha Centauri, saéngga lintang-lintang mau mungkin minangka golongan pagerakan lintang, kang nuduhaké titik asal kang padha.<ref>{{cite journal
 | last=Johnston | first=Kathryn V.
 | title=Fossil Signatures of Ancient Accretion Events in the Halo
 | journal=Bulletin of the American Astronomical Society
 | year=1995 | volume=27 | pages=1370
 | url=http://arxiv.org/abs/astro-ph?papernum=9602060
 | accessdate=2008-08-10 }}</ref> Yèn Proxima Centauri ora kaiket kanthi gravitasi marang Alpha Centauri, golongan pagerakan kaya mangkéné bakal mbantu njelasaké kacerakané lintang-lintang mau.<ref>{{cite journal
 | last=Anosova | first=J.
 | author2=Orlov, V. V.; Pavlova, N. A.
 | title=Dynamics of nearby multiple stars. The Alpha Centauri system
 | journal=Astronomy and Astrophysics
 | year=1994 | volume=292 | issue=1 | pages=115–118
 | url=http://adsabs.harvard.edu/abs/1994A%26A...292..115A
 | accessdate=2008-08-10 }}</ref>

Sanajan Proxima Centauri iku lintang paling cerak kanthi ''bona fide'', manawa waé isih ana lintang [[katé coklat]] kang panggonané luwih cerak.<ref>{{cite web
 | title=WISE Satellite Set to Map the Infrared Universe
 | publisher=Scientific American | date=December 9, 2009 | url=http://www.scientificamerican.com/article.cfm?id=wise-infrared-satellite
 | accessdate=2009-12-10 }}</ref>

=== Kamungkinan pangiring ===
Yèn sawijining planit masif révolusiné ngupengi Proxima Centauri, pagèsèran lintang bisa dumadi per orbit planit mau. Yèn babagan orbit planit ora jejeg lurus karo garis deleng saka Bumi, mula pagèsèran iki bisa njalari owaèh-owahan periodhik ing karikatan radhial Proxima Centauri. Pangukuran kaping bola-bali ing karikatan radhial Proxima Centauri kang ora nuduhaké pagèsèran mau ngedhunaké massa maksimum kang bisa diduwèni pangiring Proxima Centauri.<ref name="apj118" /><ref name="aaal344"/> Tingkat aktivitas Proxima Centauri njalari ''penderauan'' ing pangukuran karikatan radhial lintang, saéngga mbatesi kamungkinan pandhétèksian pangiring migunakaké métodhe iki.<ref name="Saar 1997 319–326"/>

Nalika taun 1998, pamriksan marang Proxima Centauri kanthi migunakaké ''[[Faint Object Spectrograph]]'' ing [[teleskop njaba akasa Hubble]] nuduhaké bukti anané pangiring Proxima ing let 0.5&nbsp;SA.<ref>{{cite journal
 | last=Schultz | first=A. B.
 | author2=Hart, H. M.; Hershey, J. L.; Hamilton, F. C.; Kochte, M.; Bruhweiler, F. C.; Benedict, G. F.; Caldwell, John; Cunningham, C.; Wu, Nailong; Franz, O. G.; Keyes, C. D.; Brandt, J. C.
 | title=A possible companion to Proxima Centauri
 | journal=Astronomical Journal
 | year=1998 | volume=115 | pages=345–350
 | url=http://adsabs.harvard.edu/abs/1998AJ....115..345S
 | accessdate=2008-06-25
 | doi=10.1086/300176 }}</ref> Nanging, panggolèkan sabanjuré kanthi migunakaké ''[[Wide Field Planetary Camera 2]]'' ora bisa nemu.<ref name=apj119>{{cite journal
 | last=Schroeder | first=Daniel J.
 | author2=Golimowski, David A.; Brukardt, Ryan A.; Burrows, Christopher J.; Caldwell, John J.; Fastie, William G.; Ford, Holland C.; Hesman, Brigette; Kletskin, Ilona; Krist, John E.; Royle, Patricia; Zubrowski, Richard. A.
 | title=A Search for Faint Companions to Nearby Stars Using the Wide Field Planetary Camera 2
 | journal=The Astronomical Journal
 | year=2000 | volume=119 | issue=2 | pages=906–922
 | url=http://adsabs.harvard.edu/abs/2000AJ....119..906S
 | accessdate=2008-06-25
 | doi=10.1086/301227 }}</ref> Proxima Centauri, bebarengan karo Alpha Centauri A lan B, dadi lintang "Tier 1" ing program ''[[Space Interferometry Mission]]'' (SIM) NASA, kang bakal mungkinaké pandhétèksian planit mawa ukuran minimal kaping telu massa Bumi ing let loro SA saka lintang "Tier 1".<ref name="numbers">{{cite web | last=Watanabe | first=Susan | date=2006-10-18 | url=http://www.jpl.nasa.gov/news/features.cfm?feature=1209 | title=Planit-Finding by Numbers | publisher=NASA JPL | accessdate=2007-07-09 | archive-date=2010-08-04 | archive-url=https://web.archive.org/web/20100804160702/http://www.jpl.nasa.gov/news/features.cfm?feature=1209 | url-status=dead }}</ref>

=== Zona layak huni ===
Film dhokumèntèr ''[[Aurelia and Blue Moon#Aurelia|Alien Worlds]]'' nyetusaké hipotèsis yèn planit kang bisa nunjang kauripan mbok mewana ngorbit Proxima Centauri utawa lintang katé abang liyané. Kanggo ana ing [[zona layak huni]] Proxima Centauri, sawijining planit kudu ana adohé 0.023–0.054&nbsp;SA saka lintang mau, lan duwé periodhe orbital suwéné 3,6–14&nbsp;dina.<ref>{{cite conference
 | last=Endl | first=M.
 | author2=Kuerster, M.; Rouesnel, F.; Els, S.; Hatzes, A. P.; Cochran, W. D.
 | editor=Drake Deming
 | title=Extrasolar Terrestrial Planets: Can We Detect Them Already?
 | book-title=Conference Proceedings, Scientific Frontiers in Research on Extrasolar Planets
 | pages=75–79 | date=June 18–21, 2002
 | location=Washington, DC
 | url=http://arxiv.org/abs/astro-ph/0208462
 | accessdate=2008-06-23 }}</ref> Planit kang ngorbit ing zona mau bakal [[tidal locking|kakunci kanthi pasang surut]], saéngga ing langit planit mau Proxima Centauri ora akèh ngalami pagerakan. Mula awan bakal terus lumaku ing salah siji sisih lumah, lan suwaliké wengi ora bakal rampung ing sisih lumah kang liyané. Nanging, anané atmosfèr bisa nyaluraké ènèrgi saka lumah kang disinari déning lintang menyang lumah planit liyané.<ref name=tarter/>

Semburan ing Proxima Centauri bisa ngikis atmosfèr planit ing [[zona layak huni]]-né, nanging èlmuwan ing filem dhokumèntèr mau yakin yèn alangan iki bisa ditanggulangi. Gibor Basri saka [[Universitas California]], Berkeley, nyebut yèn "ora ana kang [wis] nemu candhetan marang kalayakan huni." Contoné, dikawatiraké yèn arus kebak momotan saka semburan lintang bisa ngosongaké atmosfèr planit ing saubengé. Nanging, yèn planit mau duwé médhan magnèt kang kuwat, médhan mau bakal nangkis partikel saka atmosfèr.<ref>{{cite web
 | last=Alpert | first=Mark |date=November 2005
 | url=http://www.sciam.com/article.cfm?id=red-star-rising
 | title=Red Star Rising | publisher=Scientific American
 | accessdate=2008-05-19 }}</ref>

Èlmuwan liya, mligi panyengkuyung [[hipotèsis Bumi Langka]],<ref>{{cite book
 | first=Peter D. | last=Ward
 | author2=Brownlee, Donald | year=2000
 | title=Rare Earth: Why Complex Life is Uncommon in the Universe
 | publisher=Springer | isbn=0387987010 }}</ref> ora nyarujuki yèn lintang katé abang bisa njurung kauripan. Rotasi kang kakunci kanthi pasang surut bisa ngakibataké saya lemahé [[momen magnètik]] planit, saéngga [[lontaran massa korona]] saka Proxima Centauri bakal ngikis atmosfèr planit.<ref name=Khodachenko/>

== Panjlajahan antarlintang ==
[[Gambar:Sol View from AlpCenA1.png|right|thumb|Srengéngé katon saka sistem Alpha Centauri. Citra digawé kanthi migunakaké program [[Celestia]].]]
Proxima Centauri wis diusulaké minangka tujuwan pisanan sajeroning [[panjlajahan antarlintang]].<ref name=gilster/> Sanajan [[program Voyager|montor mabur akasa Voyager]] diprakirakaké bakal dadi montor mabur akasa pisanan kang lumebu ruwang antarlintang, montor mabur-montor mabur Voyager obah kanthi karikatan alon, yaiku watara 17&nbsp;km/s. Kanthi karikatan iku, Voyager merlokaké wektu 10.000 taun kanggo nempuh setaun cahya.<ref>{{cite book
 | author=Mallove, Eugene F.; Gregory L. Matloff
 | title=The starflight handbook: a pioneer's guide to interstellar travel
 | page=6 | publisher=Wiley | year=1989
 | isbn=0471619124 }}. Voyager 1 duwé karikatan asimtotik kang gedhéné {{Nowrap|3,5 SA/taun}}, sauntara Voyager 2 duwé karikatan asimtotik kang gedhéné {{Nowrap|3,4 SA/taun}}.</ref>

Yèn tenaga panggerak non-nuklir saiki digunakaké, lelaku montor mabur akasa menyang planit kang ngorbit Proxima Centauri mbutuhaké wektu éwonan taun.<ref>{{cite journal
 | last=Crawford | first=I. A.
 | title=Interstellar Travel: A Review for Astronomers
 | journal=Quarterly Journal of the Royal Astronomical Society | volume=31 | pages=377–400
 |date=September 1990
 | bibcode=1990QJRAS..31..377C }}</ref> ''[[Nuclear pulse propulsion]]'' ngambah tèknologi kang mungkinaké lelaku antarlintang ing sajeroning wektu saabad. Tèknologi kaya mangkéné iki wis mènèhi ilham kanggo sapérangan panlitian kaya ta [[Project Orion (propulsi nuklir)|Project Orion]], [[Project Daedalus]], lan [[Project Longshot]].<ref name=longshot>{{cite web
 | last=Beals | first=K. A.
 | author2=Beaulieu, M.; Dembia, F. J.; Kerstiens, J.; Kramer, D. L.; West, J. R.; Zito, J. A.
 | year=1988
 | url=http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890007533_1989007533.pdf
 |format=PDF| title=Project Longshot, an Unmanned Probe to Alpha Centauri
 | work=NASA-CR-184718 | publisher=U. S. Naval Academy
 | accessdate=2008-06-13 }}</ref>

Saka Proxima Centauri, srengéngé bakal katon minangka lintang kanthi magnitudo 0,4&nbsp; kang padhang ing rasi lintang [[Cassiopeia (rasi lintang)|Cassiopeia]].<ref>Koordhinat srengéngé bakal silih lawan karo Proxima kanthi dhiamètris, ing α={{RA|02|29|42.9487}}, δ={{DEC|+62|40|46.141}}. Magnitudo mutlak (''M<sub>v</sub>'') srengéngé yaiku 4,83, saéngga ing paralaks (''π'') 0,77199, magnitudo katon (''m'') yaiku 4,83 − 5(log<sub>10</sub>(0,77199) + 1) = 0,40.
Lihat: {{cite book
 | first=Roger John | last=Tayler | year=1994
 | title=The Stars: Their Structure and Evolution
 | publisher=Cambridge University Press
 | page=16 | isbn=0521458854 }}</ref>

== Deleng uga ==
* [[Alpha Centauri]]
* [[Pratélan lintang paling cerak]]

== Cathetan panjelas ==
{{Reflist|group=nb}}

== Cathetan sikil ==
{{reflist|3}}

== Pranala njaba ==
* [http://cassfos02.ucsd.edu/public/nearest.html Keterangan lintang sing paling cerak karo Bumi] {{Webarchive|url=https://web.archive.org/web/20100803004732/http://cassfos02.ucsd.edu/public/nearest.html |date=2010-08-03 }}
* [http://antwrp.gsfc.nasa.gov/apod/ap020715.html Gladri foto Proxima Centauri]
* [http://www.solstation.com/stars/alp-cent3.htm Sistem Alpha Centauri]
{{artikel pilihan}}

[[Kategori:Rasi lintang Centaurus]]
[[Kategori:Dhèrèt utama abang]]