Proxima Centauri - Wikipedia Bahasa Melayu, ensiklopedia bebas

Proxima Centauri
	; Imej berwarna palsu Teleskop Angkasa Hubble WFPC2 yang ditangkap pada tahun 2013. Garis cerah merupakan garis belauan (diffraction spike).
Data cerapan; Epok J2000.0 Ekuinoks J2000.0 (ICRS)
Buruj	Centaurus
Jarak hamal	14j 29m 42.946s
Keserongan	−62° 40′ 46.16″
Magnitud ketara (V)	10.43 – 11.11
Ciri-ciri
Tahap evolusi	Jujukan utama
Jenis spektrum	M5.5Ve
Jenis bolehubah	UV Cet + BY Dra
Astrometri
Halaju jejarian (Rv)	−22.204±0.032 km/s
Gerakan wajar (μ)	RA: −3781.741 mas/thn ; Dec.: 769.465 mas/thn
Paralaks (π)	768.0665 ± 0.0499 mas
Jarak	4.2465 ± 0.0003 tc ; (1.30197 ± 8.0E-5 pc)
Magnitud mutlak (MV)	15.60
Orbit
Utama	Alpha Centauri AB
Pendamping	Proxima Centauri
Tempoh (P)	547,000+6,600; −4,000 thn
Paksi separa utama (a)	8,700+700; −400 AU
Keeksentrikan (e)	0.50+0.08; −0.09
Kecondongan (i)	107.6+1.8; −2.0°
Longitud nod (Ω)	126±5°
Epok periastron (T)	+283+59; −41
Hujah periastron (ω); (sekunder)	72.3+8.7; −6.6°
Perincian
Jisim	0.1221±0.0022 M☉
Jejari	0.1542±0.0045 R☉
Kekilauan (bolometrik)	0.001567±0.000020 L☉
Kekilauan (visual, LV)	0.00005 L☉
Had dalaman zon boleh huni	0.03731±0.0075 au
Had luaran zon boleh huni	0.088±0.017 au
Graviti permukaan (log g)	5.20±0.23 cgs
Suhu	2,992+49; −47 K
Kelogaman [Fe/H]	0.21 dex
Putaran	83.2±1.6 hari
Halaju putaran (v sin i)	< 0.1 km/s
Umur	4.85 Gyr
Penamaan lain
	Alf Cen C, Alpha Centauri C, V645 Centauri, GJ 551, HIP 70890, CCDM J14396-6050C, LFT 1110, LHS 49, LPM 526, LTT 5721, NLTT 37460
Rujukan pangkalan data
SIMBAD	data
Arkib Eksoplanet	data
ARICNS	data

Proxima Centauri merupakan bintang terdekat dengan Bumi selepas Matahari, terletak pada jarak 4.25 tahun cahaya di buruj selatan Sentaur. Ditemui pada tahun 1915 oleh Robert Innes, ia merupakan sejenis bintang kecil berjisim rendah yang terlalu samar untuk dilihat dengan mata kasar, dengan magnitud ketara 11.13. Proxima Centauri merupakan sebahagian daripada sistem najam Alpha Centauri, yang dikenal pasti sebagai komponen Alpha Centauri C, dan berada pada 2.18° daripada arah barat daya pasangan AB Alpha Centauri. Ia kini berada pada kedudukan 12,950 AU (0.2 ly) daripada pasangan bintang AB, yang ia mengorbit dengan tempoh kira-kira 550,000 tahun. Nama Latinnya bermaksud 'bintang terdekat Centaurus'.

Proxima Centauri ialah sejenis bintang kerdil merah dengan jisim kira-kira 12.5% daripada jisim Matahari (M_☉), dengan ketumpatan purata kira-kira 33 kali ganda berbanding Matahari. Disebabkan oleh jarak Proxima Centauri dengan Bumi, diameter sudutnya boleh diukur secara langsung. Diameter sebenar adalah kira-kira satu pertujuh (14%) diameter Matahari. Walaupun ia mempunyai kilauan purata yang sangat rendah, Proxima Centauri merupakan sejenis bintang suar yang mengalami peningkatan kecerahan secara dramatik dan rawak disebabkan aktiviti magnetiknya. Medan magnet bintang tersebut dicipta melalui perolakan di seluruh jasad najam, dan aktiviti suar yang terhasil menjana jumlah pancaran sinar-X yang serupa dengan yang dihasilkan oleh Matahari. Percampuran dalaman bahan apinya melalui perolakan terasnya dengan kadar pengeluaran tenaga yang agak rendah, menjadikannya berupaya untuk kekal sebagai bintang jujukan utama selama empat trilion tahun lagi.

Proxima Centauri mempunyai dua planet luar suria yang diketahui dengan satu calon planet luar suria: Proxima Centauri b, Proxima Centauri d dan Proxima Centauri c yang dipertikaikan.^{[nb 3]} Proxima Centauri b mengorbit bintang pada jarak kira-kira 0.05 AU (7.5 juta km) dengan tempoh orbit kira-kira 11.2 hari Bumi. Anggaran jisimnya sekurang-kurangnya 1.06 kali ganda berbanding Bumi.^[7] Proxima b mengorbit dalam zon boleh didiami Proxima Centauri, dengan julat suhu yang sesuai untuk air cecair wujud di permukaannya, namun disebabkan oleh Proxima Centauri itu sendiri merupakan najam kerdil merah dan bintang suar, kebolehdiaman planet ini berkemungkinan besar tidak dapat ditentukan. Sebuah lagi planet sub-Bumi yang bernama Proxima Centauri d terletak pada kira-kira 0.028 AU (4.2 juta km) mengorbit bintangnya setiap 5.1 hari. Satu lagi calon planet sub-Neptun yang bernama Proxima Centauri c mengorbit pada kedudukan kira-kira 1.5 AU (220 juta km) daripada Proxima Centauri setiap 1,900 h (5.2 yr).^[15]^[16]

Nota huraian

^ From knowing the absolute visual magnitude of Proxima Centauri, $M_{V_{\ast }}=15.6$ , and the absolute visual magnitude of the Sun, $M_{V_{\odot }}=4.83$ , the visual luminosity of Proxima Centauri can therefore be calculated: $L_{V_{\ast }}/L_{V_{\odot }}=10^{0.4\left(M_{V_{\odot }}-M_{V_{\ast }}\right)}=4.92\times 10^{-5}.$
^ If Proxima Centauri was a later capture into the Alpha Centauri star system then its metallicity and age could be quite different to that of Alpha Centauri A and B. Through comparing Proxima Centauri to other similar stars it was estimated that it had a lower metallicity, ranging from less than a third, to about the same, of the Sun's.^[10]^[11]
^ Nama planet luar suria ditetapkan mengikut konvensyen penamaan Kesatuan Astronomi Antarabangsa mengikut susunan abjad bagi tarikh penemuan masing-masing, dengan 'Proxima Centauri a' sebagai bintang itu sendiri.

Rujukan

^ ^a ^b ^c ^d Vallenari, A.; dll. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875 Check |s2cid= value (bantuan). Invalid |mode=Ralat Lua pada baris 14 di Modul:Citation_mode: attempt to index field 'global_cs1_config_t' (a nil value). (bantuan) Gaia DR3 record for this source at VizieR.
^ ^a ^b Samus', N. N; Kazarovets, E. V; Durlevich, O. V; Kireeva, N. N; Pastukhova, E. N (2017). "General catalogue of variable stars". Astronomy Reports. GCVS 5.1. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.
^ Bessell, M. S. (1991). "The late-M dwarfs". The Astronomical Journal. 101: 662. Bibcode:1991AJ....101..662B. doi:10.1086/115714.
^ ^a ^b ^c ^d Kervella, P.; Thévenin, F.; Lovis, C. (2017). "Proxima's orbit around α Centauri". Astronomy & Astrophysics. 598: L7. arXiv:1611.03495. Bibcode:2017A&A...598L...7K. doi:10.1051/0004-6361/201629930. ISSN 0004-6361. S2CID 50867264. Separation: 3.1, left column of page 3; Orbital period and epoch of periastron: Table 3, right column of page 3.
^ Benedict, G. Fritz; Chappell, D.W.; Nelan, E.; Jefferys, W.H.; van Altena, W.; Lee, J.; dll. (1999). "Interferometric astrometry of Proxima Centauri and Barnard's Star using Hubble Space Telescope fine guidance sensor. 3: Detection limits for substellar companions". The Astronomical Journal. 118 (2): 1086–1100. arXiv:astro-ph/9905318. Bibcode:1999AJ....118.1086B. doi:10.1086/300975. S2CID 18099356.
^ ^a ^b Pineda, J. Sebastian; Youngblood, Allison; France, Kevin (September 2021). "The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars". The Astrophysical Journal. 918 (1): 23. arXiv:2106.07656. Bibcode:2021ApJ...918...40P. doi:10.3847/1538-4357/ac0aea. S2CID 235435757 Check |s2cid= value (bantuan). 40.
^ ^a ^b ^c ^d Suárez Mascareño, Alejandro; Artigau, Étienne; dll. (29 July 2025). "Diving into the planetary system of Proxima with NIRPS: Breaking the metre per second barrier in the infrared". Astronomy & Astrophysics. 700: A11. arXiv:2507.21751. Bibcode:2025A&A...700A..11S. doi:10.1051/0004-6361/202553728.
^ Ségransan, Damien; Kervella, Pierre; Forveille, Thierry & Queloz, Didier (2003). "First radius measurements of very low mass stars with the VLTI". Astronomy & Astrophysics. 397 (3): L5–L8. arXiv:astro-ph/0211647. Bibcode:2003A&A...397L...5S. doi:10.1051/0004-6361:20021714. S2CID 10748478.
^ Schlaufman, K.C. & Laughlin, G. (September 2010). "A physically-motivated photometric calibration of M dwarf metallicity". Astronomy & Astrophysics. 519: A105. arXiv:1006.2850. Bibcode:2010A&A...519A.105S. doi:10.1051/0004-6361/201015016. S2CID 119260592.
^ Passegger, Vera Maria; Wende-von Berg, Sebastian & Reiners, Ansgar (March 2016). "Fundamental M-dwarf parameters from high-resolution spectra using PHOENIX ACES models: I. Parameter accuracy and benchmark stars". Astronomy & Astrophysics. 587: A19. arXiv:1709.03560. Bibcode:2016A&A...587A..19P. doi:10.1051/0004-6361/201322261. ISSN 0004-6361. S2CID 10458151.
^ Feng, F.; Jones, H. R. A. (January 2018). "Was Proxima captured by Alpha Centauri A and B?". Monthly Notices of the Royal Astronomical Society. 473 (3): 3185−3189. arXiv:1709.03560. Bibcode:2018MNRAS.473.3185F. doi:10.1093/mnras/stx2576. S2CID 55711316.
^ Collins, John M.; Jones, Hugh R. A.; Barnes, John R. (June 2017). "Calculations of periodicity from Hα profiles of Proxima Centauri". Astronomy & Astrophysics. 602. A48. arXiv:1608.07834. Bibcode:2017A&A...602A..48C. doi:10.1051/0004-6361/201628827. S2CID 18949162. See section 4: "the vsini is probably less than 0.1 km/s for Proxima Centauri".
^ Kervella, Pierre; Thevenin, Frederic (March 15, 2003). "A family portrait of the Alpha Centauri system: VLT interferometer studies the nearest stars". European Southern Observatory. Dicapai pada May 10, 2016.
^ "Proxima centauri". SIMBAD. Centre de données astronomiques de Strasbourg.—some of the data is located under "Measurements".
^ Damasso, Mario; del Sordo, Fabio; Anglada-Escudé, Guillem; Giacobbe, Paolo; Sozzetti, Alessandro; Morbidelli, Alessandro; dll. (15 January 2020). "A low-mass planet candidate orbiting Proxima Centauri at a distance of 1.5 AU". Science Advances. 6 (3): eaax7467. Bibcode:2020SciA....6.7467D. doi:10.1126/sciadv.aax7467. PMC 6962037. PMID 31998838.
^ Benedict, G. Fritz; McArthur, Barbara E. (16 June 2020). "A moving target: Revising the mass of Proxima Centauri c". Research Notes of the AAS. 4 (6): 86. Bibcode:2020RNAAS...4...86B. doi:10.3847/2515-5172/ab9ca9. S2CID 225798015.

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Bacaan lanjut

Marcy, Geoffrey W.; dll. (January 2022). "Laser communication with Proxima and Alpha Centauri using the solar gravitational lens". Monthly Notices of the Royal Astronomical Society. 509 (3): 3798–3814. arXiv:2110.10247. Bibcode:2022MNRAS.509.3798M. doi:10.1093/mnras/stab3074.
Smith, Shane; dll. (October 2021). "A radio technosignature search towards Proxima Centauri resulting in a signal of interest". Nature Astronomy. 5 (11): 1148–1152. arXiv:2111.08007. Bibcode:2021NatAs...5.1148S. doi:10.1038/s41550-021-01479-w. S2CID 239948037 Check |s2cid= value (bantuan).
Marcy, G. W. (August 2021). "A search for optical laser emission from Proxima Centauri". Monthly Notices of the Royal Astronomical Society. 505 (3): 3537–3548. arXiv:2102.01910. Bibcode:2021MNRAS.505.3537M. doi:10.1093/mnras/stab1440.
Kavanagh, Robert D.; dll. (June 2021). "Planet-induced radio emission from the coronae of M dwarfs: the case of Prox Cen and AU Mic". Monthly Notices of the Royal Astronomical Society. 504 (1): 1511–1518. arXiv:2103.16318. Bibcode:2021MNRAS.504.1511K. doi:10.1093/mnras/stab929.
Pérez-Torres, M.; dll. (January 2021). "Monitoring the radio emission of Proxima Centauri". Astronomy & Astrophysics. 645: A77. arXiv:2012.02116. Bibcode:2021A&A...645A..77P. doi:10.1051/0004-6361/202039052. S2CID 227255606. A77.
Zic, Andrew; dll. (December 2020). "A Flare-type IV Burst Event from Proxima Centauri and Implications for Space Weather". The Astrophysical Journal. 905 (1): 23. arXiv:2012.04642. Bibcode:2020ApJ...905...23Z. doi:10.3847/1538-4357/abca90. S2CID 227745378. 23.
Lalitha, S.; dll. (November 2020). "Proxima Centauri - the nearest planet host observed simultaneously with AstroSat, Chandra, and HST". Monthly Notices of the Royal Astronomical Society. 498 (3): 3658–3663. arXiv:2008.07175. Bibcode:2020MNRAS.498.3658L. doi:10.1093/mnras/staa2574.
Vida, Krisztián; dll. (October 2019). "Flaring Activity of Proxima Centauri from TESS Observations: Quasiperiodic Oscillations during Flare Decay and Inferences on the Habitability of Proxima b". The Astrophysical Journal. 884 (2): 160. arXiv:1907.12580. Bibcode:2019ApJ...884..160V. doi:10.3847/1538-4357/ab41f5. S2CID 198985707. 160.
Banik, Indranil; Kroupa, Pavel (August 2019). "Directly testing gravity with Proxima Centauri". Monthly Notices of the Royal Astronomical Society. 487 (2): 1653–1661. arXiv:1906.08264. Bibcode:2019MNRAS.487.1653B. doi:10.1093/mnras/stz1379.
Pavlenko, Ya. V.; dll. (June 2019). "Temporal changes of the flare activity of Proxima Centauri". Astronomy & Astrophysics. 626: A111. arXiv:1905.07347. Bibcode:2019A&A...626A.111P. doi:10.1051/0004-6361/201834258. S2CID 158047128. A111.
Feliz, Dax L.; dll. (June 2019). "A Multi-year Search for Transits of Proxima Centauri. II. No Evidence for Transit Events with Periods between 1 and 30 days". The Astronomical Journal. 157 (6): 226. arXiv:1901.07034. Bibcode:2019AJ....157..226F. doi:10.3847/1538-3881/ab184f. 226.
Kielkopf, John F.; dll. (June 2019). "Observation of a possible superflare on Proxima Centauri". Monthly Notices of the Royal Astronomical Society: Letters. 486 (1): L31–L35. arXiv:1904.06875. Bibcode:2019MNRAS.486L..31K. doi:10.1093/mnrasl/slz054.
Meng, Tong; dll. (January 2019). "Dynamical evolution and stability maps of the Proxima Centauri system". Monthly Notices of the Royal Astronomical Society. 482 (1): 372–383. arXiv:1809.08210. Bibcode:2019MNRAS.482..372M. doi:10.1093/mnras/sty2682.
Schwarz, R.; dll. (November 2018). "Exocomets in the Proxima Centauri system and their importance for water transport". Monthly Notices of the Royal Astronomical Society. 480 (3): 3595–3608. arXiv:1711.04685. Bibcode:2018MNRAS.480.3595S. doi:10.1093/mnras/sty2064.
Howard, Ward S.; dll. (June 2018). "The First Naked-eye Superflare Detected from Proxima Centauri". The Astrophysical Journal Letters. 860 (2): L30. arXiv:1804.02001. Bibcode:2018ApJ...860L..30H. doi:10.3847/2041-8213/aacaf3. S2CID 59127420. L30.
MacGregor, Meredith A.; dll. (March 2018). "Detection of a Millimeter Flare from Proxima Centauri". The Astrophysical Journal Letters. 855 (1): L2. arXiv:1802.08257. Bibcode:2018ApJ...855L...2M. doi:10.3847/2041-8213/aaad6b. S2CID 119287614. L2.
Damasso, M.; Del Sordo, F. (March 2017). "Proxima Centauri reloaded: Unravelling the stellar noise in radial velocities". Astronomy & Astrophysics. 599: A126. arXiv:1612.03786. Bibcode:2017A&A...599A.126D. doi:10.1051/0004-6361/201630050. S2CID 119335949. A126.

Pautan luar

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"Alpha Centauri 3". SolStation. Dicapai pada August 5, 2008.
"O Sistema Alpha Centauri". Astronomia & Astrofísica (dalam bahasa Portugis). Diarkibkan daripada yang asal pada 3 March 2016. Dicapai pada June 25, 2008.
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"Planet Found in Habitable Zone Around Nearest Star". European Southern Observatory. August 24, 2016. Dicapai pada September 6, 2016.
Wall, Mike (April 24, 2016). "Found! Potentially Earth-Like Planet at Proxima Centauri Is Closest Ever". Space.com.

[7] From knowing the absolute visual magnitude of Proxima Centauri, $M_{V_{\ast }}=15.6$ , and the absolute visual magnitude of the Sun, $M_{V_{\odot }}=4.83$ , the visual luminosity of Proxima Centauri can therefore be calculated: $L_{V_{\ast }}/L_{V_{\odot }}=10^{0.4\left(M_{V_{\odot }}-M_{V_{\ast }}\right)}=4.92\times 10^{-5}.$

[alternate_estimated_metallicities-13] If Proxima Centauri was a later capture into the Alpha Centauri star system then its metallicity and age could be quite different to that of Alpha Centauri A and B. Through comparing Proxima Centauri to other similar stars it was estimated that it had a lower metallicity, ranging from less than a third, to about the same, of the Sun's.^[10]^[11]

[17] Nama planet luar suria ditetapkan mengikut konvensyen penamaan Kesatuan Astronomi Antarabangsa mengikut susunan abjad bagi tarikh penemuan masing-masing, dengan 'Proxima Centauri a' sebagai bintang itu sendiri.

[Gaia3-1] Vallenari, A.; dll. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875 Check |s2cid= value (bantuan). Invalid |mode=Ralat Lua pada baris 14 di Modul:Citation_mode: attempt to index field 'global_cs1_config_t' (a nil value). (bantuan) Gaia DR3 record for this source at VizieR.

[Samus_et_al_2017-2] Samus', N. N; Kazarovets, E. V; Durlevich, O. V; Kireeva, N. N; Pastukhova, E. N (2017). "General catalogue of variable stars". Astronomy Reports. GCVS 5.1. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.

[bessell-3] Bessell, M. S. (1991). "The late-M dwarfs". The Astronomical Journal. 101: 662. Bibcode:1991AJ....101..662B. doi:10.1086/115714.

[KervellaThévenin2017-4] Kervella, P.; Thévenin, F.; Lovis, C. (2017). "Proxima's orbit around α Centauri". Astronomy & Astrophysics. 598: L7. arXiv:1611.03495. Bibcode:2017A&A...598L...7K. doi:10.1051/0004-6361/201629930. ISSN 0004-6361. S2CID 50867264. Separation: 3.1, left column of page 3; Orbital period and epoch of periastron: Table 3, right column of page 3.

[apj118-5] Benedict, G. Fritz; Chappell, D.W.; Nelan, E.; Jefferys, W.H.; van Altena, W.; Lee, J.; dll. (1999). "Interferometric astrometry of Proxima Centauri and Barnard's Star using Hubble Space Telescope fine guidance sensor. 3: Detection limits for substellar companions". The Astronomical Journal. 118 (2): 1086–1100. arXiv:astro-ph/9905318. Bibcode:1999AJ....118.1086B. doi:10.1086/300975. S2CID 18099356.

[Pineda2021-6] Pineda, J. Sebastian; Youngblood, Allison; France, Kevin (September 2021). "The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars". The Astrophysical Journal. 918 (1): 23. arXiv:2106.07656. Bibcode:2021ApJ...918...40P. doi:10.3847/1538-4357/ac0aea. S2CID 235435757 Check |s2cid= value (bantuan). 40.

[SuárezMascareño2025-8] Suárez Mascareño, Alejandro; Artigau, Étienne; dll. (29 July 2025). "Diving into the planetary system of Proxima with NIRPS: Breaking the metre per second barrier in the infrared". Astronomy & Astrophysics. 700: A11. arXiv:2507.21751. Bibcode:2025A&A...700A..11S. doi:10.1051/0004-6361/202553728.

[aaa397-9] Ségransan, Damien; Kervella, Pierre; Forveille, Thierry & Queloz, Didier (2003). "First radius measurements of very low mass stars with the VLTI". Astronomy & Astrophysics. 397 (3): L5–L8. arXiv:astro-ph/0211647. Bibcode:2003A&A...397L...5S. doi:10.1051/0004-6361:20021714. S2CID 10748478.

[aaa519_A105-10] Schlaufman, K.C. & Laughlin, G. (September 2010). "A physically-motivated photometric calibration of M dwarf metallicity". Astronomy & Astrophysics. 519: A105. arXiv:1006.2850. Bibcode:2010A&A...519A.105S. doi:10.1051/0004-6361/201015016. S2CID 119260592.

[PasseggerWende-von_Berg2016-11] Passegger, Vera Maria; Wende-von Berg, Sebastian & Reiners, Ansgar (March 2016). "Fundamental M-dwarf parameters from high-resolution spectra using PHOENIX ACES models: I. Parameter accuracy and benchmark stars". Astronomy & Astrophysics. 587: A19. arXiv:1709.03560. Bibcode:2016A&A...587A..19P. doi:10.1051/0004-6361/201322261. ISSN 0004-6361. S2CID 10458151.

[FengJones2018-12] Feng, F.; Jones, H. R. A. (January 2018). "Was Proxima captured by Alpha Centauri A and B?". Monthly Notices of the Royal Astronomical Society. 473 (3): 3185−3189. arXiv:1709.03560. Bibcode:2018MNRAS.473.3185F. doi:10.1093/mnras/stx2576. S2CID 55711316.

[Collins2016-14] Collins, John M.; Jones, Hugh R. A.; Barnes, John R. (June 2017). "Calculations of periodicity from Hα profiles of Proxima Centauri". Astronomy & Astrophysics. 602. A48. arXiv:1608.07834. Bibcode:2017A&A...602A..48C. doi:10.1051/0004-6361/201628827. S2CID 18949162. See section 4: "the vsini is probably less than 0.1 km/s for Proxima Centauri".

[ESO2003-15] Kervella, Pierre; Thevenin, Frederic (March 15, 2003). "A family portrait of the Alpha Centauri system: VLT interferometer studies the nearest stars". European Southern Observatory. Dicapai pada May 10, 2016.

[SIMBAD-16] "Proxima centauri". SIMBAD. Centre de données astronomiques de Strasbourg.—some of the data is located under "Measurements".

[Damasso2020-18] Damasso, Mario; del Sordo, Fabio; Anglada-Escudé, Guillem; Giacobbe, Paolo; Sozzetti, Alessandro; Morbidelli, Alessandro; dll. (15 January 2020). "A low-mass planet candidate orbiting Proxima Centauri at a distance of 1.5 AU". Science Advances. 6 (3): eaax7467. Bibcode:2020SciA....6.7467D. doi:10.1126/sciadv.aax7467. PMC 6962037. PMID 31998838.

[BenedictMcArthur2020-19] Benedict, G. Fritz; McArthur, Barbara E. (16 June 2020). "A moving target: Revising the mass of Proxima Centauri c". Research Notes of the AAS. 4 (6): 86. Bibcode:2020RNAAS...4...86B. doi:10.3847/2515-5172/ab9ca9. S2CID 225798015.

[1]

[2]

[3]

[4]

[5]

[6]

[nb 1]

[7]

[8]

[9]

[nb 2]

[12]

[13]

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[nb 3]

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Data cerapan Epok J2000.0 Ekuinoks J2000.0 (ICRS)
Imej berwarna palsu Teleskop Angkasa Hubble WFPC2 yang ditangkap pada tahun 2013. Garis cerah merupakan garis belauan (diffraction spike).
Buruj	Centaurus
Jarak hamal	14^j 29^m 42.946^s^[1]
Keserongan	−62° 40′ 46.16″^[1]
Magnitud ketara (V)	10.43 – 11.11^[2]
Ciri-ciri
Tahap evolusi	Jujukan utama
Jenis spektrum	M5.5Ve^[3]
Jenis bolehubah	UV Cet + BY Dra^[2]
Astrometri

Halaju jejarian (R_v)	2998777959999999999♠−22.204±0.032^[4] km/s
Gerakan wajar (μ)	RA: −3781.741 mas/thn^[1] Dec.: 769.465 mas/thn^[1]
Paralaks (π)	768.0665 ± 0.0499 mas^[1]
Jarak	4.2465 ± 0.0003 tc (1.30197 ± 8.0E-5 pc)
Magnitud mutlak (M_V)	15.60^[5]

Orbit^[4]
Utama	Alpha Centauri AB
Pendamping	Proxima Centauri
Tempoh (P)	7005547000000000000♠547,000+6,600 −4,000 thn
Paksi separa utama (a)	7015130150147509000♠8,700+700 −400 AU
Keeksentrikan (e)	6999500000000000000♠0.50+0.08 −0.09
Kecondongan (i)	7002107600000000000♠107.6+1.8 −2.0°
Longitud nod (Ω)	7002126000000000000♠126±5°
Epok periastron (T)	7002283000000000000♠+283+59 −41
Hujah periastron (ω) (sekunder)	7001723000000000000♠72.3+8.7 −6.6°
Perincian

Jisim	6999122100000000000♠0.1221±0.0022^[4] M_☉
Jejari	6999154200000000000♠0.1542±0.0045^[4] `R`_☉
Kekilauan (bolometrik)	0.001567±0.000020^[6] L_☉
Kekilauan (visual, L_V)	0.00005^{[nb 1]} L_☉
Had dalaman zon boleh huni	7009558149655581700♠0.03731±0.0075 au^[7]
Had luaran zon boleh huni	7010131646126215999♠0.088±0.017 au^[7]
Graviti permukaan (log g)	7000520000000000000♠5.20±0.23^[8] cgs
Suhu	7003299200000000000♠2,992+49 −47^[6] K
Kelogaman [Fe/H]	0.21^[9]^{[nb 2]} dex
Putaran	7001832000000000000♠83.2±1.6^[7] hari
Halaju putaran (v sin i)	< 0.1^[12] km/s
Umur	4.85^[13] Gyr

Penamaan lain
Alf Cen C, Alpha Centauri C, V645 Centauri, GJ 551, HIP 70890, CCDM J14396-6050C, LFT 1110, LHS 49, LPM 526, LTT 5721, NLTT 37460^[14]
Rujukan pangkalan data
SIMBAD	data
Arkib Eksoplanet	data
ARICNS	data

Nota huraian

Rujukan

Further reading

Bacaan lanjut

Pautan luar