HD 50554

HD 50554
星座 ふたご座
見かけの等級 (mv) 6.84[1]
分類 F型主系列星[1]
位置
元期:J2000.0[1]
赤経 (RA, α)  06h 54m 42.8262s[1]
赤緯 (Dec, δ) +24° 14′ 44.008″[1]
赤方偏移 -0.000013[1]
視線速度 (Rv) -3.787 km/s[1]
固有運動 (μ) 赤経: -35.881 ミリ秒/年[1]
赤緯: -96.771 ミリ秒/年[1]
年周視差 (π) 32.59 ± 0.31ミリ秒[1]
（誤差1%）
距離 100.1 ± 1 光年[注 1]
（30.7 ± 0.3 パーセク[注 1]）
絶対等級 (MV) 4.38[2]
物理的性質
半径 1.07 ± 0.03 R☉[3]
質量 1.06 ± 0.03 M☉[3]
表面重力 4.4 ± 0.04 (log g)[3]
自転速度 3.32 ± 0.59 km/s[2]
スペクトル分類 F8V[1]
光度 1.37 ± 0.01 L☉[3]
表面温度 6,036 ± 52 K[3]
色指数 (B-V) 0.582 ± 0.008[2]
金属量[Fe/H] 0.02 ± 0.06[2]
年齢 33 ± 14 億年[3]
他のカタログでの名称
BD+24 1451[1]
GSC 01894-01961[1]
HIP 33212[1]
SAO 78855[1]
■Template （■ノート ■解説） ■Project

HD 50554は、地球から見て、ふたご座の方角に約100光年離れた位置にある恒星である。

概要

大きさの比較
太陽 HD 50554
太陽 Exoplanet

HD 50554は、核内で水素を燃料としているF型主系列星である。7等星であり、肉眼では見えないが双眼鏡や望遠鏡を使うと見ることができる。

2002年、デブラ・フィッシャーらによる視線速度法の観測によって、周囲を公転している太陽系外惑星HD 50554 bが発見された[4]。この惑星は、主星から3億4000万km離れた、やや歪んだ軌道を公転している。

HD 50554の惑星[5]
名称
（恒星に近い順） 		質量 軌道長半径
（天文単位） 		公転周期
(日) 		軌道離心率 軌道傾斜角 半径
b >4.46 ± 0.48 MJ 2.28 ± 0.13 1224 ± 12 0.444 ± 0.038 — —

関連項目

脚注

注釈

  1. ^ a b パーセクは1 ÷ 年周視差（秒）より計算、光年は1÷年周視差（秒）×3.2615638より計算

出典

  1. ^ a b c d e f g h i j k l m n o “SIMBAD Astronomical database”. Result for HD 50554. 2017年11月14日閲覧。
  2. ^ a b c d Perrier, C.; Sivan, J.-P.; Naef, D.; Beuzit, J. L.; Mayor, M.; Queloz, D.; Udry, S. (2003). “The ELODIE survey for northern extra-solar planets. I. Six new extra-solar planet candidates”. Astronomy and Astrophysics 410 (3): 1039–1049. arXiv:astro-ph/0308281. Bibcode: 2003A&A...410.1039P. doi:10.1051/0004-6361:20031340. http://www.aanda.org/articles/aa/full/2003/42/aa2924/aa2924.html. 
  3. ^ a b c d e f Bonfanti, A.; Ortolani, S.; Piotto, G.; Nascimbeni, V. (2015). “Revising the ages of planet-hosting stars”. Astronomy and Astrophysics 575: A18. arXiv:1411.4302. Bibcode: 2015A&A...575A..18B. doi:10.1051/0004-6361/201424951. http://www.aanda.org/articles/aa/full_html/2015/03/aa24951-14/aa24951-14.html. 
  4. ^ Fischer et al. (2002). “Planetary Companions to HD 136118, HD 50554, and HD 106252”. Publications of the Astronomical Society of the Pacific 114: 529-535. doi:10.1086/341677. http://www.journals.uchicago.edu/doi/full/10.1086/341677. 
  5. ^ Butler et al. (2006). “Catalog of Nearby Exoplanets”. The Astrophysical Journal 646 (1): 505?522. doi:10.1086/504701. http://www.iop.org/EJ/article/0004-637X/646/1/505/64046.html 2010年4月14日閲覧。. 

外部リンク

Read other articles:

Bandar Udara Regional County Eagle

Eagle County Regional AirportIATA: EGEICAO: KEGE EGELocation of the Airport in ColoradoFAA LID: EGEInformasiJenisPublicPemilikEagle CountyMelayaniEagle, ColoradoLokasiGypsum, ColoradoKetinggian dpl1,993,5 mdplKoordinat39°38′33″N 106°55′04″W / 39.64250°N 106.91778°W / 39.64250; -106.91778Koordinat: 39°38′33″N 106°55′04″W / 39.64250°N 106.91778°W / 39.64250; -106.91778Situs webwww.flyvail.comLandasan pacu Arah Pan...

 

KAI Commuter

Untuk kegunaan lain, lihat KCI. PT Kereta Commuter IndonesiaStasiun Juanda, stasiun yang juga menjadi kantor pusat KAI CommuterIkhtisarWilayah utamaLintas pelayanan komuter KAI di: JabodetabekBantenJawa Barat (kecuali Siliwangi)Jawa Tengah (kecuali Kedung Sepur dan Batara Kresna)Daerah Istimewa YogyakartaJawa Timur (kecuali Pandanwangi)Armada843 armadaJumlah stasiun80 stasiunPerusahaan indukKereta Api Indonesia (99,78%)Kantor pusatStasiun Juanda, Sawah Besar, Kota Jakarta PusatTokoh pentingAs...

 

Blackridge Wilderness

Protected area in Utah, United States Blackridge WildernessIUCN category Ib (wilderness area)Blackridge WildernessLocationWashington County, Utah, USANearest cityCedar City, UTCoordinates37°20′21″N 113°13′32″W / 37.3392213055°N 113.225425663°W / 37.3392213055; -113.225425663[1]Area13,108 acres (5,305 ha)EstablishedMarch 30, 2009Governing bodyBureau of Land Management Blackridge Wilderness is a 13,108-acre (5,305 ha) wilderness ar...

Helga Moddansdóttir

Helga Moddansdóttir was the mistress of Haakon Paulsson who was Earl of Orkney from 1105 to 1123. The Orkneyinga saga states that she was the daughter of Moddan (Scottish Gaelic: Madadhan) - described as a rich and well-born farmer - and that she and the earl had three children.[1] She was a member of a powerful dynasty in northern Scotland, sometimes referred to as Clan Moddan by modern historians, whose power base was Dale possibly near the modern-day Helmsdale in Sutherland.[...

 

Club MTV (British and Irish TV channel)

British and Irish television channel Television channel Club MTVCountryUnited Kingdom and IrelandBroadcast areaUnited Kingdom and IrelandNetworkMTVProgrammingLanguage(s)EnglishPicture format576i 16:9 SDTVOwnershipOwnerViacomCBS Networks UK & AustraliaSister channels MTV MTV OMG MTV Base MTV Classic MTV Hits MTV Music MTV Rocks HistoryLaunched20 April 2001; 22 years ago (20 April 2001)Closed20 July 2020; 3 years ago (20 July 2020)Former namesMTV Dance (2001–2018...

 

Ketogenic amino acid

Type of amino acid Summary of amino acid catabolism A ketogenic amino acid is an amino acid that can be degraded directly into acetyl-CoA, which is the precursor of ketone bodies and myelin, particularly during early childhood, when the developing brain requires high rates of myelin synthesis.[1] This is in contrast to the glucogenic amino acids, which are converted into glucose. Ketogenic amino acids are unable to be converted to glucose as both carbon atoms in the ketone body are ul...

Alexandria, Rumania

Alexandria di Provinsi Teleorman Lambang kota Untuk pengertian lain, lihat Alexandria. Alexandria ialah ibu kota Provinsi Teleorman, Rumania. Kota ini terletak di selatan Bucureşti, ke arah perbatasan Bulgaria. Kota ini terletak di Sungai Vedea, dan berpenduduk 58.651 jiwa. Sejarah Pada tahun 1900, kota ini berpenduduk 13.675 jiwa. Barang dagangan utamanya adalah serealia, diangkut oleh rel kereta api ke pelabuhan Zimnicea ke Sungai Donau, atau melalui sungai ke Giurgiu. Alexandria dinamai m...

 

Basilika Biara Agung Santo Vincentius, Latrobe

Basilika Biara Agung Santo VincentiusBasilika Minor Biara Agung Santo VincentiusInggris: Saint Vincent ArchabbeyBasilika Biara Agung Santo VincentiusLokasiLatrobe, PennsylvaniaNegara Amerika SerikatDenominasiGereja Katolik RomaArsitekturStatusBasilika minorStatus fungsionalAktifAdministrasiKeuskupanKeuskupan Greensburg Basilika Biara Agung Santo Vincentius (Inggris: Basilica of Saint Vincent Archabbey adalah sebuah gereja basilika minor Katolik yang terletak di Latrobe, Pennsylva...

 

Hero (album Super Junior)

HeroSampul album Hero (Versi 2CD+DVD)Album studio karya Super JuniorDirilis24 Juli 2013 (2013-07-24)(Lihat Sejarah perilisan)Direkam2008–2013 at SM Studios, Seoul, South KoreaGenreK-pop, R&B, electropop, dance, rap, EurohouseDurasi51:04BahasaJapaneseLabelAvex TraxProduserLee Soo Man, Max MatsuuraKronologi Super Junior Sexy, Free & Single(2012)Sexy, Free & Single2012 Hero(2013) Mamacita(2014)Mamacita2014 Singel dalam album Hero Bijin (Bonamana)Dirilis: June 8, 2011 Mr. S...

Jazmin Carlin

British swimmer Jazmin CarlinCarlin in 2009Personal informationFull nameJazmin Roxy CarlinNicknameJazzNational team Great Britain Wales[1]Born (1990-09-17) 17 September 1990 (age 33)[2]Swindon, EnglandHeight1.75 m (5 ft 9 in)Weight57 kg (126 lb; 9.0 st)SportSportSwimmingStrokesFreestyleClubSwansea ITC and University of Bath Medal record Women's swimming Representing  Great Britain Event 1st 2nd 3rd Olympic Games 0 2 0...

 

Bukit Çamlıca

Çamlıca HillÇamlıca TepesiPemandangan Bukit Çamlıca di balik Jembatan Bosphorus.Titik tertinggiKetinggian268 m (879 ft)Koordinat41°1′39″N 29°4′6″E / 41.02750°N 29.06833°E / 41.02750; 29.06833Koordinat: 41°1′39″N 29°4′6″E / 41.02750°N 29.06833°E / 41.02750; 29.06833 GeografiÇamlıca HillLetak Bukit Çamlıca di Istanbul, Turki.LetakÜsküdar, Istanbul Bukit Çamlıca (Turki: Çamlıca Tepesi), al...

 

Lambang Papua Selatan

Lambang Papua SelatanDetailDigunakan sejak2023Mottomaju negerikuVersi awalDesain pemenang sayembara oleh Ramdan Lambang Papua Selatan berbentuk perisai berwarna biru dengan tepi merah putih bertuliskan Papua Selatan. Unsur-unsur pada lambang ini terdiri dari bintang kuning, empat ujung anak panah berwarna coklat, berlian abu-abu, ujung tombak berwarna merah putih, padi dan kapas, daun sagu berwarna hijau kekuningan, akar pohon, dan kandara (tifa) bertuliskan motto Maju Negeriku.[1] Ma...

Ellis Park Stadium

Stadium in Johannesburg, South Africa Ellis ParkEmirates Airline ParkFormer namesCoca-Cola Park (2008–12)Location47 N. Park Lane Doornfontein, Johannesburg, Gauteng Province, 2028Coordinates26°11′51″S 28°3′39″E / 26.19750°S 28.06083°E / -26.19750; 28.06083OwnerCity of Johannesburg, Orlando Pirates, Interza Lesego, Ellis Park Stadium (Pty) LtdOperatorEllis Park World of SportCapacity62,567 (Rugby union and Soccer)55,686 (2010 FIFA World Cup)SurfaceGrassCon...

 

Saïd Taghmaoui

Saïd Taghmaoui Saïd durante el estreno de American Hustle en París en el 2014.Información personalNacimiento 19 de julio de 1973 (50 años)Villepinte, Seine-Saint-Denis, FranciaNacionalidad Estadounidense, francesa y marroquíReligión Islam Lengua materna Árabe Información profesionalOcupación Actor de televisión, actor de cine y actor Años activo desde 1994Carrera deportivaDeporte Boxeo [editar datos en Wikidata] Saïd Taghmaoui (Villepinte, Seine-Saint-Denis; 19 de ...

 

Solar prominence

Structure extending off of the Sun's surface Solar prominence seen in true color during totality of a Solar eclipse. In solar physics, a prominence, sometimes referred to as a filament,[a] is a large plasma and magnetic field structure extending outward from the Sun's surface, often in a loop shape. Prominences are anchored to the Sun's surface in the much brighter photosphere, and extend outwards into the solar corona. While the corona consists of extremely hot plasma, prominences co...

Malpensa Express

Malpensa ExpressServizio di trasporto pubblicoUn EA 720 Malpensa Express a Milano Bovisa PolitecnicoTipoServizio ferroviario aeroportuale Stati Italia InizioMilano CadornaMilano Centrale FineMalpensa Aeroporto Terminal 2 Apertura1999 Linee impiegateMilano-SaronnoSaronno-NovaraBusto-Malpensa  GestoreTrenord Mezzi utilizzatiCSA  N. stazioni e fermate10 Tempo di percorrenza51-57 min Velocità media60 km/h Trasporto pubblico Manuale Simbolo utilizzato per indicare i treni Malpensa ...

 

Kleve

Place in North Rhine-Westphalia, Germany This article is about the North Rhine-Westphalia town. For other uses, see Kleve (disambiguation). Cleves redirects here. For the duchy, see Duchy of Cleves. For other uses, see Cleve (disambiguation). Town in North Rhine-Westphalia, GermanyKleve KleveTownSchwanenburg Castle FlagCoat of armsLocation of Kleve within Kleve district Kleve Show map of GermanyKleve Show map of North Rhine-WestphaliaCoordinates: 51°47′24″N 06°08′24″E / ...

 

HMCS Cayuga

Destroyer of the Royal Canadian Navy Cayuga in 1954 History Canada NameCayuga NamesakeCayuga nation OrderedApril 1942 BuilderHalifax Shipyards, Halifax Laid down7 October 1943 Launched28 July 1945 Commissioned20 October 1947 Decommissioned27 February 1964 Identificationpennant number: R04 Later DDE 218 Motto Onenh owa den dya (Now let us proceed)[1] Honours andawardsKorea 1950–52[1] FateScrapped, Faslane NotesLivery Colours: Gold and scarlet BadgeBlazon Or, an Indian of the ...

Timur Zhamaletdinov

Russian footballer In this name that follows Eastern Slavic naming customs, the patronymic is Abdurashitovich and the family name is Zhamaletdinov. Timur Zhamaletdinov Zhamaletdinov with CSKA in 2017Personal informationFull name Timur Abdurashitovich ZhamaletdinovDate of birth (1997-05-21) 21 May 1997 (age 27)Place of birth Moscow, RussiaHeight 1.81 m (5 ft 11 in)Position(s) ForwardTeam informationCurrent team Shinnik YaroslavlNumber 10Youth career2003–2014 Lokomotiv...

 

Darío Gómez

Darío Gómez Información personalNombre de nacimiento Darío de Jesús Gómez ZapataApodo El Rey del DespechoNacimiento 6 de febrero de 1951 San Jerónimo, Antioquia, ColombiaFallecimiento 26 de julio de 2022 (71 años) Medellín, ColombiaCausa de muerte Infarto agudo de miocardioSepultura Cementerio Campos de PazNacionalidad ColombianaFamiliaPadres Marcos Aurelio Gómez MúneraAna Abigaíl ZapataCónyuge Marta Pineda Olga Lucia Arcila[1]​Pareja Johana VargasHijos 6Información p...