7 Comae Berenices

7 Comae Berenices
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Coma Berenices
Right ascension 12h 16m 20.53831s[1]
Declination +23° 56′ 43.4700″[1]
Apparent magnitude (V) 4.93[2]
Characteristics
Evolutionary stage horizontal branch
Spectral type G8 III–IIIb[3]
B−V color index 0.957[2]
Astrometry
Radial velocity (Rv)−27.89±0.13[4] km/s
Proper motion (μ) RA: −26.55[1] mas/yr
Dec.: −6.22[1] mas/yr
Parallax (π)13.08 ± 0.30 mas[1]
Distance249 ± 6 ly
(76 ± 2 pc)
Absolute magnitude (MV)+0.51[2]
Details[4]
Mass2.37±0.16 M☉
Radius10.07±0.66 R☉
Luminosity63+14
−12 L☉
Surface gravity (log g)2.95±0.08 cgs
Temperature5,023±25 K
Metallicity [Fe/H]−0.09±0.05 dex
Rotational velocity (v sin i)2.26±0.45 km/s
Age730±150 Myr
Other designations
7 Com, BD+24°2443, FK5 2982, HD 106714, HIP 59847, HR 4667, SAO 82211[5]
Database references
SIMBADdata

7 Comae Berenices is a single[6] star located 249[1] light years away in the northern constellation of Coma Berenices. It is a dim star but visible to the naked eye near the Coma Star Cluster with an apparent visual magnitude of 4.93.[2] The star is moving closer to the Earth with a heliocentric radial velocity of −28 km/s,[4] and is predicted to come as close as 83 light-years in 2.4 million years.[2]

This is an evolved giant star with a stellar classification of G8 III–IIIb.[3] At the age of 730 million years it is a red clump giant, which indicates it is on the horizontal branch and is generating energy via helium fusion at its core.[7] The star has 2.4 times the mass of the Sun and has expanded to 10 times the Sun's radius. It is radiating about 63 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,023 K.[4]

References

  1. ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
  2. ^ a b c d e Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
  3. ^ a b Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
  4. ^ a b c d Jofré, E.; et al. (2015), "Stellar parameters and chemical abundances of 223 evolved stars with and without planets", Astronomy & Astrophysics, 574: A50, arXiv:1410.6422, Bibcode:2015A&A...574A..50J, doi:10.1051/0004-6361/201424474, S2CID 53666931.
  5. ^ "7 Com". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved December 30, 2018.
  6. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
  7. ^ Mishenina, T. V.; et al. (September 2006), "Elemental abundances in the atmosphere of clump giants", Astronomy and Astrophysics, 456 (3): 1109–1120, arXiv:astro-ph/0605615, Bibcode:2006A&A...456.1109M, doi:10.1051/0004-6361:20065141, S2CID 18764566.

Read other articles:

Atlantic Division (NHL)

Atlantic DivisionAltri nomiPatrick Division Sport Hockey su ghiaccio TipoCampionato per club FederazioneNational Hockey League Parte diEastern Conference Paese Canada Stati Uniti OrganizzatoreNational Hockey League CadenzaAnnuale Partecipanti8 StoriaFondazione1993-1994 Detentore Florida Panthers Record vittorie New Jersey Devils (9) Modifica dati su Wikidata · Manuale La Atlantic Division della National Hockey League venne formata nel 1993 come parte della Eastern Co...

 

Perdana Menteri Israel

Perdana Menteri IsraelLambang IsraelBendera Perdana Menteri[1]PetahanaBenjamin Netanyahusejak 29 Desember 2022GelarYang muliaKediamanBeit AghionDicalonkan olehKnessetDitunjuk olehPresidenMasa jabatanEmpat tahun, dapat diperpanjang selamanyaPejabat perdanaDavid Ben-GurionDibentuk14 Mei 1948WakilPerdana Menteri AlternatifGajiUS$170.000 setiap tahun[2]Situs webpmo.gov.il Perdana Menteri Israel (ראש הממשל, Rosh HaMemshala, menyatakan Kepala Pemerintahan; Arab: رئي�...

 

Big Valley Rancheria

Indian tribe in California, United States Location of Big Valley Rancheria The Big Valley Band of Pomo Indians of the Big Valley Rancheria is a federally recognized tribe of Pomo and Pit River Indians, with a reservation located in Lake County, California, near the town of Finley.[1] They conduct tribal business from Lakeport, California. The tribe formed its current governmental system under the Indian Reorganization Act of 1935 and ratified its constitution on 15 January 1936. Triba...

Gladstone High School (Oregon)

Public school in Gladstone, Clackamas, Oregon, United StatesGladstone High SchoolAddress18800 Portland AveGladstone, Clackamas, Oregon 97027United StatesCoordinates45°23′14″N 122°35′52″W / 45.387333°N 122.597702°W / 45.387333; -122.597702InformationTypePublicEstablished1966School districtGladstone School DistrictPrincipalAmy Mikesell [1]Teaching staff27.70 (FTE)[2]Grades9-12Number of students658 (2018–19)[2]Student to teacher ratio...

 

Jefferson Market Prison

Former prison in New York City 40°44′04″N 73°59′59″W / 40.7345°N 73.9996°W / 40.7345; -73.9996 (Jefferson Market Garden) The now-demolished prison on the left next to the extant courthouse on the right with the Sixth Avenue El in front The Jefferson Market Prison was a prison in New York City at 10 Greenwich Avenue that opened in 1877, together with the adjacent Third Judicial District Courthouse. Frederick Clarke Withers designed these twin buildin...

 

Синелобый амазон

Синелобый амазон Научная классификация Домен:ЭукариотыЦарство:ЖивотныеПодцарство:ЭуметазоиБез ранга:Двусторонне-симметричныеБез ранга:ВторичноротыеТип:ХордовыеПодтип:ПозвоночныеИнфратип:ЧелюстноротыеНадкласс:ЧетвероногиеКлада:АмниотыКлада:ЗавропсидыКласс:Пт�...

Qiblih

Kuil Baháʼu'lláh di dekat Akko, Israel, yang menjadi qiblih umat Baháʼí. Dalam agama Baha'i, qiblih (Arab: قبلةcode: ar is deprecated , arah) adalah tempat yang menjadi arah berdoa umat Baha'i. Qiblih terletak di Kuil Baháʼu'lláh di dekat Akko, Israel, atau di koordinat 32°56′37″N 35°5′30.5″E / 32.94361°N 35.091806°E / 32.94361; 35.091806. Selain menjadi arah berdoa, qiblih juga menjadi arah wajah jenazah yang dimakamkan. Lihat pula Kiblat Mizr...

 

High-bandwidth Digital Content Protection

Le procédé HDCP (High-Bandwidth Digital Content Protection), traduisible par Protection des contenus numériques haute définition, est un procédé électronique et logiciel élaboré par Intel destiné à contrôler les flux numériques vidéo et audio haute définition. Il exploite principalement les interfaces et liaisons DVI, HDMI ou DisplayPort et permet d'en restreindre l'usage, notamment à en interdire la copie numérique directe vidéo ou audio. Faisant partie de la gestion des d...

 

Человек прямоходящий

† Человек прямоходящий Научная классификация Домен:ЭукариотыЦарство:ЖивотныеПодцарство:ЭуметазоиБез ранга:Двусторонне-симметричныеБез ранга:ВторичноротыеТип:ХордовыеПодтип:ПозвоночныеИнфратип:ЧелюстноротыеНадкласс:ЧетвероногиеКлада:АмниотыКлада:Синапсиды�...

Beja people

Cushitic ethnic group native to Egypt, Sudan and Eritrea BejaالبجاBeja men dancingTotal population1,900,000[1]–2,759,000[2]Regions with significant populationsEastern Desert Sudan2,620,000 (2024)[2] Eritrea121,000 (2022)[3] Egypt88,000 (2023)[4]LanguagesArabic (Sudanese Arabic), Beja, TigreReligionSunni IslamRelated ethnic groupsCushites, Tigre, Sudanese Arabs, Nubians The Beja people (Arabic: البجا, Beja: Oobja, Tigre: በጃ...

 

Steve Austin's Broken Skull Challenge

American reality television competition show Steve Austin's Broken Skull ChallengeGenre Competition Reality television Created bySteve AustinDirected byAdam VetriPresented bySteve AustinCountry of originUnited StatesOriginal languageEnglishNo. of seasons5No. of episodes67ProductionExecutive producers Christian Sarabia Rabih Gholam Steve Austin Jack Heller Vince Cariati Steve Kaufman Production locationsAgua Dulce, California, United StatesRunning time41–43 minutesProduction companies Broken...

 

周處除三害 (電影)

周處除三害The Pig, The Snake and The Pigeon正式版海報基本资料导演黃精甫监制李烈黃江豐動作指導洪昰顥编剧黃精甫主演阮經天袁富華陳以文王淨李李仁謝瓊煖配乐盧律銘林孝親林思妤保卜摄影王金城剪辑黃精甫林雍益制片商一種態度電影股份有限公司片长134分鐘产地 臺灣语言國語粵語台語上映及发行上映日期 2023年10月6日 (2023-10-06)（台灣） 2023年11月2日 (2023-11-02)（香�...

Porsche 935

Motor vehicle Porsche 935K3Porsche 935 K3 in the Jägermeister livery for the DRM.OverviewManufacturerPorsche AGProduction1976–1981AssemblyWest Germany: Stuttgart-ZuffenhausenDesignerNorbert SingerBody and chassisClassGroup 5 Special ProductionBody style2-door coupéLayoutRear-engine, rear-wheel-driveRelatedPorsche 934Porsche 930PowertrainEngine3.0–3.3 L Type 935 twin-turbocharged Flat 6Transmission4-speed manual without differentialDimensionsWheelbase2,271 mm (89.4...

 

Hubert von Meyerinck

Artikel ini sebatang kara, artinya tidak ada artikel lain yang memiliki pranala balik ke halaman ini.Bantulah menambah pranala ke artikel ini dari artikel yang berhubungan atau coba peralatan pencari pranala.Tag ini diberikan pada November 2022. Hubert von Meyerinckgambar dari 1933Lahir(1896-08-23)23 Agustus 1896Potsdam, JermanMeninggal13 Mei 1971(1971-05-13) (umur 74)Hamburg, Jerman BaratPekerjaanPemeranTahun aktif1917–1971 Hubert Hubsi von Meyerinck (23 Agustus 1896 –...

 

Abu Dhabi WTA

Abu Dhabi WTAAltri nomiAbu Dhabi WTA Women's Tennis Open (2021) Mubadala Abu Dhabi Open (2023-presente) Sport Tennis CategoriaWTA 500 FederazioneWomen's Tennis Association Paese Emirati Arabi Uniti LuogoAbu Dhabi ImpiantoZayed Sports City International Tennis Centre SuperficieCemento OrganizzatoreIMG DirettoreNigel Gupta CadenzaAnnuale DisciplineSingolare e doppio femminile Partecipanti24Q/28S/16D Sito Internetmubadalaabudhabiopen.com StoriaFondazione2021 Numero edizioni3 (2024) Detentri...

1998 FEI World Equestrian Games

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: 1998 FEI World Equestrian Games – news · newspapers · books · scholar · JSTOR (May 2019) (Learn how and when to remove this message) 1998 FEI World Equestrian GamesHost cityRome, ItalyNations42Events11 in 5 disciplinesOpening1 October 1998 (1998-...

 

Chronique anglo-saxonne

Vous lisez un « bon article » labellisé en 2008. La première page de la Chronique de Peterborough. La Chronique anglo-saxonne (anglais : Anglo-Saxon Chronicle) est un ensemble d'annales en vieil anglais relatant l'histoire des Anglo-Saxons. Leur rédaction débute dans le royaume de Wessex sous le règne d'Alfred le Grand, à la fin du IXe siècle. De multiples copies des annales sont distribuées aux monastères d'Angleterre et ensuite mises à jour indépendamment l...

 

Workman Publishing Company

American book publishing company Workman Publishing CompanyParent companyHachette Book GroupStatusActiveFounded1968FounderPeter WorkmanCountry of originUnited StatesHeadquarters location225 Varick StreetNew York City, New YorkDistribution self-distributed (US) Thomas Allen & Son (CA) Melia Publishing Services (UK) Hardie Grant (AU books) BrownTrout Publishers (AU calendars) Bookreps NZ (NZ) Real Books (SA)[1] Publication typesBooks, calendarsImprintsArtisan, Algonquin, Algonquin Y...

Maurizio Sarri

Maurizio Sarri Sarri sebagai manajer Juventus pada tahun 2019Informasi pribadiNama lengkap Maurizio SarriTanggal lahir 10 Januari 1959 (umur 65)Tempat lahir Napoli, ItaliaPosisi bermain Bek tengahKarier senior*Tahun Tim Tampil (Gol) Figline Kepelatihan1990–1991 Stia1991–1993 Faellese1993–1996 Cavriglia1996–1998 Antella1998–1999 Valdema1999–2000 Tegoleto2000–2003 Sansovino2003–2005 Sangiovannese2005–2006 Pescara2006–2007 Arezzo2007 Avellino2007–2008 Verona2008–200...

 

Afro-Costa Ricans

Costa Ricans of African ancestry Ethnic group Afro-Costa RicansCalypso dancers from Puerto Limón during an event in Bribrí, Talamanca.Total populationc. 400,000 (8% of total population).[1]Regions with significant populationsPuerto LimonSan JoseAlajuelaHerediaLanguagesSpanishEnglish creoleReligionRoman CatholicismBaptistsAgnosticismChristianismRelated ethnic groupsAfro-Caribbean, other Black Latin Americans Afro-Costa Ricans are Costa Ricans of African ancestry. Costa Rica has four ...