79 Ceti

79 Ceti
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cetus
Right ascension 02h 35m 19.9293s[1]
Declination −03° 33′ 38.1707″[1]
Apparent magnitude (V) +6.83[2]
Characteristics
Spectral type G2V+M[3][4] or G8IV[5]
B−V color index 0.670±0.004[2]
Variable type none
Astrometry
Radial velocity (Rv)−50.93±0.09[2] km/s
Proper motion (μ) RA: −155.58[1] mas/yr
Dec.: −437.99[1] mas/yr
Parallax (π)26.4360 ± 0.0580 mas[1]
Distance123.4 ± 0.3 ly
(37.83 ± 0.08 pc)
Absolute magnitude (MV)+3.88[2]
Details[6]
79 Ceti A
Mass1.01 M
Radius1.48[7] R
Luminosity1.99±0.04 L
Surface gravity (log g)4.19±0.02 cgs
Temperature5,806±17 K
Metallicity [Fe/H]+0.16±0.01[6] dex
Age6.0[8] or 9.4±0.8[2] Gyr
79 Ceti B
Mass0.286[4] M
Other designations
79 Cet, BD−04°426, FK5 4237, Gaia DR2 2495335115182966016, GJ 9085, HD 16141, HIP 12048, SAO 129992, WDS J02353-0334A, 2MASS J02351994-0333376[9]
Database references
SIMBADdata

79 Ceti, also known as HD 16141, is a binary star system located 123[1] light-years from the Sun in the southern constellation of Cetus. It has an apparent visual magnitude of +6.83,[2] which puts it below the normal limit for visibility with the average naked eye. The star is drifting closer to the Earth with a heliocentric radial velocity of −51 km/s.[2]

Harlan (1974) assigned this star a stellar classification of G2V,[3] matching an ordinary G-type main-sequence star that is undergoing core hydrogen fusion. However, Houk and Swift (1999) found a class of G8IV,[5] which suggests it has exhausted the supply of hydrogen at its core and begun to evolve off the main sequence. Eventually the outer layers of the star will expand and cool and the star will become a red giant. Estimates of the star's age range from 6.0[8] to 9.4 billion years old. It has an estimated 1.06 times the mass of the Sun and 1.48[7] times the Sun's radius. The star is radiating twice[6] luminosity of the Sun from its photosphere at an effective temperature of 5,806 K.[6] The discrepancy was later found to be due to an additional red dwarf star in the system at a projected separation 220 AUs.[4]

Planetary system

On March 29, 2000, a planet orbiting primary star was announced, it was discovered using the radial velocity method.[10] This object has a minimum 0.26 times the mass of Jupiter and is orbiting its host star every 75.5 days.[11]

The 79 Ceti planetary system[12]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥0.260 ± 0.028 MJ 0.363 ± 0.021 75.523 ± 0.055 0.252 ± 0.052

See also

References

  1. ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d e f g 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 Harlan, E. A. (June 1974). "MK classification for F- and G-type stars. III". Astronomical Journal. 79: 682–686. Bibcode:1974AJ.....79..682H. doi:10.1086/111597.
  4. ^ a b c Quarles, Billy; Li, Gongjie; Kostov, Veselin; Haghighipour, Nader (2020), "Orbital Stability of Circumstellar Planets in Binary Systems", The Astronomical Journal, 159 (3): 80, arXiv:1912.11019, Bibcode:2020AJ....159...80Q, doi:10.3847/1538-3881/ab64fa, S2CID 209444271
  5. ^ a b Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
  6. ^ a b c d S. G., Sousa; et al. (August 2008). "Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes". Astronomy and Astrophysics. 487 (1): 373–381. arXiv:0805.4826. Bibcode:2008A&A...487..373S. doi:10.1051/0004-6361:200809698. S2CID 18173201.
  7. ^ a b Stassun, Keivan G.; et al. (March 2017). "Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes". The Astronomical Journal. 153 (3): 20. arXiv:1609.04389. Bibcode:2017AJ....153..136S. doi:10.3847/1538-3881/aa5df3. S2CID 119219062. 136.
  8. ^ a b Sousa, S. G.; et al. (March 2010). "Higher depletion of lithium in planet host stars: no age and mass effect". Astronomy and Astrophysics. 512: L5. arXiv:1003.0405. Bibcode:2010A&A...512L...5S. doi:10.1051/0004-6361/201014125. S2CID 118646949.
  9. ^ "79 Cet". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 19 August 2017.
  10. ^ "Keck astronomers discover planets smaller than saturn" (Press release). Kamuela, Hawaii: W. M. Keck Observatory. March 29, 2000. Retrieved August 13, 2019.
  11. ^ Marcy, Geoffrey W.; et al. (2000). "Sub-Saturn Planetary Candidates of HD 16141 and HD 46375". The Astrophysical Journal Letters. 536 (1): L43–L46. arXiv:astro-ph/0004326. Bibcode:2000ApJ...536L..43M. doi:10.1086/312723. PMID 10849416. S2CID 119530785.
  12. ^ Butler, J. T.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.


Read other articles:

Achille ValenciennesLahir(1794-08-09)9 Agustus 1794Paris, PrancisMeninggal13 April 1865(1865-04-13) (umur 70)Paris, PrancisKebangsaanPrancisKarier ilmiahBidangParasitologiZoologiInstitusiMuséum national d'histoire naturelle Achille Valenciennes (9 Agustus 1794 – 13 April 1865) adalah seorang zoologis asal Prancis.[1][2] Valenciennes lahir di Paris, dan belajar di bawah bimbingan Georges Cuvier. Kajiannya terhadap cacing parasit dalam manusia membuat kontr...

 

Samsung Galaxy J2 Prime Fabricante Samsung Série Samsung Galaxy J Sistema operativo Android Samsung Galaxy J2 Prime é um smartphone intermediário, com sistema operacional Android, da família Galaxy fabricado pela Samsung Electronics, lançado em novembro de 2016. O celular conta com uma tela TFT e não AMOLED, de 5 polegadas, e também o processador MediaTek MT6737T com quatro núcleos de até 1,4 GHz, 1,5 GB de memória RAM e armazenamento interno de 16 GB.[1] Ver também Samsung Galaxy ...

 

Die Barfüsserkirche & Historisches Museum Basel, im August 2005 Die Barfüsserkirche (früher auch Franziskanerkirche) steht in der Schweizer Stadt Basel, ist eine ehemalige Klosterkirche und beherbergt heute das Museum für Geschichte des Historischen Museums Basel. An zentraler Lage in der Innenstadt von Grossbasel gelegen, dominiert der Kirchenbau den Barfüsserplatz. Inhaltsverzeichnis 1 Vorgeschichte 2 Klosterkirche 3 Waren- und Salzlager 4 Historisches Museum Basel 5 Weblinks 6 Ein...

Marcus Tavernier Tavernier en 2022Datos personalesNombre completo Marcus Joseph TavernierNacimiento Leeds, Inglaterra22 de marzo de 1999 (24 años)País Reino UnidoNacionalidad(es) Británica InglesaAltura 1,77 m (5′ 10″)Carrera deportivaDeporte FútbolClub profesionalDebut deportivo 2017(Middlesbrough F. C.)Club AFC BournemouthLiga Premier LeaguePosición CentrocampistaDorsal(es) 16Goles en clubes 25Trayectoria Middlesbrough F. C. (2017-2022) → Milton Keynes Dons F. C. (2018)...

 

أنواع من من دون رتبة الحيتانيات يُعتَقَد أنّ الحيتانيات تطوّرت عن ذوات الأصابع المزدوجة في شبه القارة الهندية منذ 50 مليون عام، وذلك على مدى فترة لا تقل عن 15 مليون سنة. والحيتانيات ثدييات بحرية مائية بالكامل تنتمي إلى رتبة مزدوجات الأصابع، ويُعتَقَد بأنها تفرّعت عن باقي مز...

 

Гасдал Транспортна мережа Стамбульський метрополітен Дата створення / заснування 2023 Країна  Туреччина Адміністративна одиниця СтамбулЕюп Місце розташування Mimar Sinand Власник Міністерство транспорту, морських справ і зв'язку Туреччини Оператор TCDD Taşımacılık Дата офіц...

Hospital in EnglandNetherne HospitalThe former administration block of Netherne Hospital in 2007Shown in SurreyGeographyLocationHooley, England, United KingdomCoordinates51°17′33″N 0°08′26″W / 51.292408°N 0.140556°W / 51.292408; -0.140556OrganisationCare systemPublic NHSTypePublicServicesEmergency departmentNo Accident & EmergencyHistoryOpened1905Closed1994LinksListsHospitals in England Netherne Hospital, formerly The Surrey County Asylum at Netherne or...

 

最優秀的(英语:The Most Excellent) 蒙受恩典的阁下(英语:His Grace)貝里克公爵Duke of Berwick弗朗西斯柯·悠維(Francisco Jover)繪製,現藏於普拉多博物館个人资料出生(1670-08-21)1670年8月21日 法蘭西王國奧弗涅穆蘭逝世1734年6月12日(1734歲—06—12)(63歲) 神聖羅馬帝國巴登藩侯國菲利普斯堡配偶昂諾拉·伯克(英语:Honora de Burgh)安妮·巴克利 (Anne Bulkeley)父母詹姆斯二...

 

Neighbourhood in Kolkata in West Bengal, IndiaTollygunge Tolly Para or Studio ParaNeighbourhood in Kolkata (Calcutta)TollygungeLocation in KolkataCoordinates: 22°29′53″N 88°20′46″E / 22.498°N 88.346°E / 22.498; 88.346Country IndiaStateWest BengalCityKolkataDistrictKolkata[1][2][3]Metro StationRabindra Sarobar, Mahanayak Uttam Kumar, NetajiMunicipal CorporationKolkata Municipal CorporationKMC wards81, 89, 94, 95, 97, 98Elevation3...

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: Dor Mhoineachi Rotti – news · newspapers · books · scholar · JSTOR (December 2016) (Learn how and when to remove this template message) Dor Mhoineachi RottiFrequencyMonthlyFounderFr. Vincent LoboFounded1915LanguageKonkani language Dor Mhoineachi Rotti (meaning ...

 

American writer and actor Robert BenchleyBenchley photographed for Vanity FairBornRobert Charles Benchley(1889-09-15)September 15, 1889Worcester, Massachusetts, U.S.DiedNovember 21, 1945(1945-11-21) (aged 56)New York City, U.S.OccupationWriter, critic, actor, film directorGenreDeadpan, Parody, Surreal humourYears active1910s-1945Spouse Gertrude Darling ​(m. 1914)​Children2, including NathanielRelativesPeter Benchley and Nat Benchley (grandsons) Robert Ch...

 

This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources.Find sources: Qidu District – news · newspapers · books · scholar · JSTOR (April 2017) 25°06′42″N 121°41′07″E / 25.111715°N 121.685203°E / 25.111715; 121.685203 DistrictQidu 七堵區Shichito, CiduDistrictQidu District in Keelung...

Town house converted to offices in Manhattan, New York CityWilliam and Helen Ziegler House(2017)General informationTypeTown house converted to officesArchitectural styleNeo-GeorgianAddress116 East 55th StreetManhattan, New York CityCoordinates40°45′36″N 73°58′15″W / 40.759868°N 73.970914°W / 40.759868; -73.970914Current tenantsSUNY Global CenterConstruction started1926Completed1927ClientWilliam Ziegler Jr.Design and constructionArchitect(s)William Lawrence ...

 

Pigs (song) redirects here. For the Pink Floyd song, see Pigs (Three Different Ones). 1991 studio album by Cypress HillCypress HillStudio album by Cypress HillReleasedAugust 13, 1991[1]RecordedAugust 1990 – May 1991StudioImage Recording (Los Angeles)GenreWest Coast hip hopLatin hip hopLength46:54LabelRuffhouseColumbiaProducerDJ MuggsCypress Hill chronology Cypress Hill(1991) Something for the Blunted(1992) Singles from Cypress Hill The Phuncky Feel One / How I Could Just Kil...

 

German cyclist (born 1999) Ronja EiblRonja Eibl in 2018.Personal informationBorn (1999-08-30) August 30, 1999 (age 24)Balingen, GermanyHeight167 cm (5 ft 6 in)Weight50 kg (110 lb)Team informationCurrent teamAlpecin–FenixDisciplineCross-CountryMountain bike racingRoleRider Medal record World Championships 2018 Lenzerheide Team relay Ronja Eibl (born August 1999) is a German cross-country cyclist. She participated at the 2018 UCI Mountain Bike World Champion...

Artikel ini perlu diwikifikasi agar memenuhi standar kualitas Wikipedia. Anda dapat memberikan bantuan berupa penambahan pranala dalam, atau dengan merapikan tata letak dari artikel ini. Untuk keterangan lebih lanjut, klik [tampil] di bagian kanan. Mengganti markah HTML dengan markah wiki bila dimungkinkan. Tambahkan pranala wiki. Bila dirasa perlu, buatlah pautan ke artikel wiki lainnya dengan cara menambahkan [[ dan ]] pada kata yang bersangkutan (lihat WP:LINK untuk keterangan lebih lanjut...

 

Kejuaraan Remaja U-18 AFF 2017Informasi turnamenTuan rumah MyanmarKotaYangonJadwalpenyelenggaraan4 (4)-17 September 2017 (2017-9-17)Jumlahtim peserta11 (dari 1 sub-konfederasi)Tempatpenyelenggaraan2 (di 1 kota)Hasil turnamenJuara Thailand (gelar ke-5)Tempat kedua MalaysiaTempat ketiga IndonesiaTempat keempat MyanmarStatistik turnamenJumlahpertandingan29Jumlah gol119 (4,1 per pertandingan)Jumlahpenonton16.304 (562 per pertandingan)Pencetak...

 

Academic journalFeminist ReviewCover of the first issueDisciplineWomen's studiesLanguageEnglishPublication detailsHistory1979–presentPublisherSAGE PublishingFrequencyTriannuallyImpact factor1.341 (2019)Standard abbreviationsISO 4 (alt) · Bluebook (alt1 · alt2)NLM (alt) · MathSciNet (alt )ISO 4Fem. Rev.IndexingCODEN (alt · alt2) · JSTOR (alt) · LCCN (alt)MIAR · NLM (alt) · ScopusIS...

Jamaican footballer (born 1990) Darren Mattocks Mattocks with Vancouver Whitecaps Reserves in 2012Personal informationFull name Darren Dimitri Mattocks[1]Date of birth (1990-09-02) 2 September 1990 (age 33)[2]Place of birth Portmore, JamaicaHeight 5 ft 10 in (1.78 m)Position(s) ForwardCollege careerYears Team Apps (Gls)2010–2011 Akron Zips 47 (39)Senior career*Years Team Apps (Gls)2012–2016 Vancouver Whitecaps FC 93 (19)2016–2017 Portland Timbers 43 (...

 

コディ・ゼラーCody Zeller 2019年のゼラーニューオーリンズ・ペリカンズポジション C / PF所属リーグ NBA基本情報愛称 Big Handsome国籍 アメリカ合衆国生年月日 (1992-10-05) 1992年10月5日(31歳)出身地 インディアナ州ワシントン(英語版)身長 211cm (6 ft 11 in)体重 109kg (240 lb)ウィングスパン 216cm  (7 ft 1 in)シューズ エア・ジョーダン[1]キ...

 

Strategi Solo vs Squad di Free Fire: Cara Menang Mudah!