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{{Infobox planet
{{Planetbox begin
| name = Proxima Centauri b
| image = Artist’s impression of Proxima Centauri b shown hypothetically as an arid rocky super-earth.jpg
| caption = Penggambaran para ilustrator atas Proxima Centauri b sebagai eksoplanet dengan permukaan berbatu-batu, dengan sistem bintang biner Proxima Centauri dan [[Alpha Centauri]] pada latar belakang. Penampakan sebenarnya dari planet ini tidak diketahui.
<!-- DISCOVERY -->
| discoverer = Anglada-Escudé et al.
| discovery_site = [[Observatorium Selatan Eropa]]▼
| discovered = 24 Agustus 2016
| discovery_method = [[spektroskopiSpektroskopi Doppler]]▼
<!-- DESIGNATIONS -->
<!-- ORBITAL -->
| apsis = astron
| semimajor = {{val|0.0485|0.0041|0.0051}} [[Satuan astronomi|AU]]
| eccentricity = 0,124{{±|0,070|0,068}}
| period = 11,18427{{±|0,00066|0,00070}}<ref name=Mascareno2020/> [[hari|h]]
| arg_peri = 310 (± 50)<ref name=nature_paper />
| semi-amplitude = 1,38 (± 0,21)<ref name=nature_paper />
| star = [[Proxima Centauri]]▼
<!-- PHYS CHARS -->
| mean_radius = {{val|1.07|0.38|0.31}}<ref name=BA2017>{{cite journal|last1=Bixel|first1= A.| last2= Apai|first2=D. |title=Probabilistic Constraints on the Mass and Composition of Proxima b|journal=The Astrophysical Journal Letters|date=21 February 2017|volume=836|issue= 2|pages=L31|doi=10.3847/2041-8213/aa5f51|language= en|issn= 2041-8205|bibcode=2017ApJ...836L..31W|arxiv=1702.02542}}</ref>{{Earth radius|link=y}}, {{val|1.30|1.20|0.62}}<ref name="TaskerLaneuville2020">{{cite journal |last1=Tasker |first1=Elizabeth J. |last2=Laneuville |first2=Matthieu |last3=Guttenberg |first3=Nicholas |author-link1=Elizabeth J. Tasker|title=Estimating Planetary Mass with Deep Learning |journal=The Astronomical Journal|volume=159|issue=2|date=7 January 2020|pages=41|issn=1538-3881|doi=10.3847/1538-3881/ab5b9e|bibcode=2020AJ....159...41T|arxiv=1911.11035}}</ref>{{Earth radius|link=y}}
| mass = {{val|1.172|1.66|0.72}}<ref name=BA2017/>{{Earth mass|link=y}}, {{val|1.60|0.46|0.36}}<ref name="TaskerLaneuville2020"/>{{Earth mass|link=y}}
| surface_grav = ~1,1 [[Gravitasi|g]], <br />~0,95 [[Gravitasi|g]]
| temperaturesingle_temperature = {{convert|234|K|C F}}▼
<!-- ATMOSPHERE -->
<!-- NOTES -->
}}
{{Planetbox image
| image = Artist's impression of the planet orbiting Proxima Centauri.jpg
| caption = Penggambaran artis tentang permukaan Proxima Centauri b. Sistem biner [[Alpha Centauri]] dapat dilihat dalam latar belakang, di bagian kanan atas dari Proxima.
}}
{{Planetbox star
▲|star = [[Proxima Centauri]]
|constell = [[Centaurus]]
|ra = {{RA|14|29|42.94853}}
|dec = {{DEC|−62|40|46.1631}}
|dist_ly = 4.224
|dist_pc = 1.295
|class = M6Ve<ref name=aaa460_3_695>{{cite journal
|last=Torres | first=C. A. O.
|title=Search for associations containing young stars (SACY). I. Sample and searching method
|journal=[[Astronomy and Astrophysics]] | volume=460 | issue=3
|date=December 2006 | pages=695–708
|doi=10.1051/0004-6361:20065602 | arxiv=astro-ph/0609258
|bibcode=2006A&A...460..695T
|last2=Quast
|first2=G. R.
|last3=Da Silva
|first3=L.
|last4=De La Reza
|first4=R.
|last5=Melo
|first5=C. H. F.
|last6=Sterzik
|first6=M. }}</ref>
|app_mag = 11.13
|mass = 0.123 (± 0.006)
|radius = 0.141 (± 0.007)<ref name=aaa505_1_205>{{cite journal |last1=Demory |first1=B.-O. |last2=Ségransan |first2=D. |last3=Forveille | first3=T. |last4=Queloz |first4=D. |last5=Beuzit |first5=J.-L. |last6=Delfosse |first6=X. |last7=Di Folco |first7=E. |last8=Kervella |first8=P. |last9=Le Bouquin |first9=J.-B. |date=October 2009 |title=Mass-radius relation of low and very low-mass stars revisited with the VLTI | journal=Astronomy and Astrophysics |volume=505 |issue=1 |pages=205–215 |doi=10.1051/0004-6361/200911976 |bibcode=2009A&A...505..205D |arxiv = 0906.0602 }}</ref>
|temperature = 3042 (± 117)<ref name=aaa397>{{cite journal |last1=Ségransan |first1=D. |last2=Kervella |first2=P. |last3=Forveille |first3=T. |last4=Queloz |first4=D. |title=First radius measurements of very low mass stars with the VLTI |journal=Astronomy and Astrophysics |date=2003 |volume=397 |issue=3 |pages=L5–L8 |doi=10.1051/0004-6361:20021714 |bibcode=2003A&A...397L...5S |arxiv = astro-ph/0211647 }}</ref>
|metallicity = 0.2
|age = 4.85<ref name=aaa519_A105>{{cite journal |last1=Schlaufman |first1=K. C. |last2=Laughlin |first2=G. |title=A {{Sic|hide=y|physically|-}}motivated photometric calibration of M dwarf metallicity |journal=Astronomy and Astrophysics |volume=519 |date=September 2010 |doi=10.1051/0004-6361/201015016 |bibcode=2010A&A...519A.105S |arxiv = 1006.2850 |pages=A105}}</ref>
}}
{{Planetbox character
| minimum_mass_earth = 1.27 (+0,19, -0,17)
| radius_earth = ≥1.1 (± 0.3)
| stellar_flux = 0.65
▲| temperature = {{convert|234|K|C F}}
}}
{{Planetbox orbit
| period = 11.186 (+0.001, -0.002)
| semimajor = 0.0485 (+0.0041, -0.0051)
| eccentricity = <0.35
| semi-amp = 1.38 [1.17, 1.59]
| arg_peri = 310 [0,360]
}}
{{Planetbox discovery
| discovery_date = 24 August 2016
▲| discovery_site = [[Observatorium Selatan Eropa]]
▲| discovery_method = [[spektroskopi Doppler]]
| discovery_status = Dikonfirmasi
}}
{{Planetbox reference
| star = Proxima+Cen
| planet = b
}}
{{Planetbox end}}
'''Proxima Centauri b''' (disebut juga '''Proxima b'''<ref name=":0">{{Cite web|url=http://www.cnn.com/videos/world/2016/08/24/earth-like-planet-discovered-orig-nws.cnn?adkey=bn|title=Earth-like planet discovered orbiting sun's neighbor|date=24 August 2016|publisher=[[CNN]]|access-date=24 August 2016|quote=A planet named Proxima b has been discovered orbiting the closest star to our sun.}}</ref><ref>{{Cite web|url=https://www.theguardian.com/science/2016/aug/24/earth-like-planet-found-orbiting-our-suns-nearest-star-raises-hopes-for-life-proxima-b|title=Discovery of potentially Earth-like planet Proxima b raises hopes for life|last=Davis|first=Nicola|date=24 August 2016|website=[[The Guardian]]|access-date=24 August 2016}}</ref>) adalah sebuah [[planet luar surya]] yang mengorbit dalam [[zona layak huni]] dari [[Katai merah|bintang katai merah]] [[Proxima Centauri]], bintang terdekat dengan [[Matahari]].<ref name="NYT-20160824">{{Cite news|url=http://www.nytimes.com/2016/08/25/science/earth-planet-proxima-centauri.html|title=One Star Over, a Planet That Might Be Another Earth|last=Chang|first=Kenneth|date=24 August 2016|work=[[New York Times]]|access-date=24 August 2016}}</ref><ref name="CNN article">{{Cite web|url=http://www.cnn.com/2016/08/24/health/proxima-b-centauri-rocky-planet-habitable-zone-neighbor-star/|title=Closest potentially habitable planet to our solar system found|last=Strickland|first=Ashley|date=24 August 2016|website=CNN Health|publisher=|access-date=25 August 2016}}</ref> Planet ini terletak sekitar 4,2 [[tahun cahaya]] (1.3 [[parsec]], 40 triliun [[Kilometer|km]], atau 25 triliun mil) dari Bumi di konstelasi [[Centaurus (rasi bintang)|Centaurus]]. Planet ini adalah planet luar surya terdekat dengan [[Tata Surya|tata surya]] serta planet layak huni terdekat yang diketahui.
 
Pada'''Proxima bulanCentauri Agustusb''' (disebut juga '''Proxima b'''<ref name=":0">{{Cite web|url=http://www.cnn.com/videos/world/2016,/08/24/earth-like-planet-discovered-orig-nws.cnn?adkey=bn|title=Earth-like planet discovered orbiting sun's neighbor|date=24 August 2016|publisher=[[ObservatoriumCNN]]|access-date=24 SelatanAugust Eropa2016|quote=A planet named Proxima b has been discovered orbiting the closest star to our sun.}}</ref><ref>{{Cite web|url=https://www.theguardian.com/science/2016/aug/24/earth-like-planet-found-orbiting-our-suns-nearest-star-raises-hopes-for-life-proxima-b|title=Discovery of potentially Earth-like planet Proxima b raises hopes for life|last=Davis|first=Nicola|date=24 August 2016|website=[[The Guardian]]|access-date=24 mengumumkanAugust penemuan2016}}</ref>) planetadalah inisebuah [[eksoplanet]] yang mengorbit dalam [[zona laik huni|zona layak huni]] dari [[Katai merah|bintang katai merah]] [[Proxima Centauri]], bintang terdekat dengan [[Matahari]].<ref name="NYT-20160824">{{Cite news|url=http://www.nytimes.com/2016/08/25/science/earth-planet-proxima-centauri.html|title=One Star Over, a Planet That Might Be Another Earth|last=Chang|first=Kenneth|date=24 August 2016|work=[[New York Times]]|access-date=24 August 2016}}</ref><ref name="CNN article">{{Cite web|url=http://www.cnn.com/2016/08/24/health/proxima-b-centauri-rocky-planet-habitable-zone-neighbor-star/|title=Closest potentially habitable planet to our solar system found|last=Strickland|first=Ashley|date=24 August 2016|website=CNN Health|publisher=|access-date=25 August 2016}}</ref> Planet ini terletak sekitar 4,2 [[tahun cahaya]] (1.3 [[parsec]], 40 triliun [[Kilometer|km]], atau 25 triliun mil) dari Bumi di konstelasi [[Centaurus (rasi bintang)|Centaurus]]. Planet ini adalah eksoplanet terdekat dengan [[Tata Surya|tata surya]] serta [[Kelaikhunian planet|planet laik huni]] terdekat yang diketahui.

Pada bulan Agustus 2016, [[Observatorium Selatan Eropa]] mengumumkan penemuan planet ini.<ref name="nature_paper">{{Cite journal|last=Anglada-Escudé|first=G.|last2=Amado|first2=P. J.|last3=Barnes|first3=J.|last4=Berdiñas|first4=Z. M.|last5=Butler|first5=R. P.|last6=Coleman|first6=G. A. L.|last7=de la Cueva|first7=I.|last8=Dreizler|first8=S.|last9=Endl|first9=M.|date=25 August 2016|title=A terrestrial planet candidate in a temperate orbit around Proxima Centauri|url=http://www.eso.org/public/archives/releases/sciencepapers/eso1629/eso1629a.pdf|journal=Nature|language=en|volume=536|issue=7617|pages=437–440|doi=10.1038/nature19106|issn=0028-0836}}</ref><ref name="NYT-20160824">{{Cite news|url=http://www.nytimes.com/2016/08/25/science/earth-planet-proxima-centauri.html|title=One Star Over, a Planet That Might Be Another Earth|last=Chang|first=Kenneth|date=24 August 2016|work=[[New York Times]]|access-date=24 August 2016}}</ref><ref name="Pale Red Dot campaign reveals Earth-mass world in orbit around Proxima Centauri">{{Cite web|url=http://www.eso.org/public/news/eso1629/|title=Planet Found in Habitable Zone Around Nearest Star|date=24 August 2016|publisher=[[European Southern Observatory]]|archive-date=24 August 2016|dead-url=no}}</ref><ref name="Space.com">{{Cite web|url=http://www.space.com/33834-discovery-of-planet-proxima-b.html|title="Found! Potentially Earth-Like Planet at Proxima Centauri Is Closest Ever "|date=24 August 2016|publisher=[[Space.com]]|archive-date=24 August 2016|dead-url=no}}</ref><ref>{{Cite web|url=http://www.telegraph.co.uk/science/2016/08/24/proxima-b-alien-life-could-exist-on-second-earth-found-orbiting/|title=Proxima b: Alien life could exist on 'second Earth' found orbiting our nearest star in Alpha Centauri system|last=Knapton|first=Sarah|date=24 August 2016|website=[[The Daily Telegraph|The Telegraph]]|publisher=[[Telegraph Media Group]]|access-date=24 August 2016}}</ref> Tak lama setelah penemuan, para peneliti menyelidiki potensi layaklaik huni planet Proxima b, dan menyebutkan bahwa planet ini mungkin adalah planet luar suryaeksoplanet yang mendukung kehidupan yang terdekat dengan lokasi kita.<ref name="nature_paper">{{Cite journal|last=Anglada-Escudé|first=G.|last2=Amado|first2=P. J.|last3=Barnes|first3=J.|last4=Berdiñas|first4=Z. M.|last5=Butler|first5=R. P.|last6=Coleman|first6=G. A. L.|last7=de la Cueva|first7=I.|last8=Dreizler|first8=S.|last9=Endl|first9=M.|date=25 August 2016|title=A terrestrial planet candidate in a temperate orbit around Proxima Centauri|url=http://www.eso.org/public/archives/releases/sciencepapers/eso1629/eso1629a.pdf|journal=Nature|language=en|volume=536|issue=7617|pages=437–440|doi=10.1038/nature19106|issn=0028-0836}}</ref> Peneliti berpikir bahwa kedekatannya dengan Bumi menawarkan kesempatan untuk kemungkinan eksplorasi robot di planet dengan proyek Starshot,<ref name="NYT-20160824">{{Cite news|url=http://www.nytimes.com/2016/08/25/science/earth-planet-proxima-centauri.html|title=One Star Over, a Planet That Might Be Another Earth|last=Chang|first=Kenneth|date=24 August 2016|work=[[New York Times]]|access-date=24 August 2016}}</ref><ref name="CNN article">{{Cite web|url=http://www.cnn.com/2016/08/24/health/proxima-b-centauri-rocky-planet-habitable-zone-neighbor-star/|title=Closest potentially habitable planet to our solar system found|last=Strickland|first=Ashley|date=24 August 2016|website=CNN Health|publisher=|access-date=25 August 2016}}</ref>, atau setidaknya, "dalam abad mendatang".<ref name="CNN article">{{Cite web|url=http://www.cnn.com/2016/08/24/health/proxima-b-centauri-rocky-planet-habitable-zone-neighbor-star/|title=Closest potentially habitable planet to our solar system found|last=Strickland|first=Ashley|date=24 August 2016|website=CNN Health|publisher=|access-date=25 August 2016}}</ref>
 
Planet ini ditemukan dengan menggunakan metode kecepatan radial (spektroskopi Doppler), di mana pergeseran Doppler periodik dari garis-garis spektrum sebuah bintang menunjukkan sebuah objek yang mengorbit bintang tersebut. Dari metode ini, kecepatan radial bintang induk relatif terhadap Bumi adalah berbeda-beda dengan amplitudo sekitar 2 meter (6.6 kaki) per detik.<ref name="nature_paper">{{Cite journal|last=Anglada-Escudé|first=G.|last2=Amado|first2=P. J.|last3=Barnes|first3=J.|last4=Berdiñas|first4=Z. M.|last5=Butler|first5=R. P.|last6=Coleman|first6=G. A. L.|last7=de la Cueva|first7=I.|last8=Dreizler|first8=S.|last9=Endl|first9=M.|date=25 August 2016|title=A terrestrial planet candidate in a temperate orbit around Proxima Centauri|url=http://www.eso.org/public/archives/releases/sciencepapers/eso1629/eso1629a.pdf|journal=Nature|language=en|volume=536|issue=7617|pages=437–440|doi=10.1038/nature19106|issn=0028-0836}}</ref>
Baris 76 ⟶ 41:
== Referensi ==
{{Reflist|30em}}
{{Sky|14|29|42.9487|-|62|40|46.141|4.243}}
 
[[Kategori:Rasi bintang CentaurusSentaurus]]▼
[[Kategori:Proxima Centauri]]
[[Kategori:Eksoplanet]]
[[Kategori:Planet luar surya]]
 
 
{{Astronomi-stub}}
▲[[Kategori:Rasi bintang Centaurus]]
Diperoleh dari "https://wiki-indonesia.club/wiki/Proxima_Centauri_b"