HD 190422

HD 190422
Location of HD 190422(circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 20h 07m 35.09061s[1]
Declination −55° 00′ 57.6492″[1]
Apparent magnitude (V) 6.25±0.01[2]
Characteristics
Spectral type F9 V CH−0.4[3]
B−V color index +0.53[4]
Astrometry
Radial velocity (Rv)12.7±0.3[5] km/s
Proper motion (μ) RA: +18.283 mas/yr[1]
Dec.: +35.310 mas/yr[1]
Parallax (π)41.5069 ± 0.028 mas[1]
Distance78.58 ± 0.05 ly
(24.09 ± 0.02 pc)
Absolute magnitude (MV)+4.41[6]
Details
Mass1.25[7] M☉
Radius1.09±0.05[8] R☉
Luminosity1.534+0.006
−0.005[1] L☉
Surface gravity (log g)4.42[3] cgs
Temperature6,235±100[9] K
Metallicity [Fe/H]−0.13±0.03[10] dex
Rotation27.2 d[11]
Rotational velocity (v sin i)15.6±0.8[12] km/s
Age400[13][3] Myr
Other designations
77 G. Telescopii[14], CD−55°8393, CPD−55°9317, GC 27884, HD 190422, HIP 99137, HR 7674, SAO 246444[15]
Database references
SIMBADdata

HD 190422, also known as HR 7674 or rarely 77 G. Telescopii, is a solitary star located in the southern constellation Telescopium. It has an apparent magnitude of +6.25,[2] placing it near the limit for naked eye, even under ideal conditions. At its current distance, HD 190422's brightness is diminished by 0.11 magnitudes due to extinction from interstellar dust[16] and it has an absolute magnitude of +4.41.[6]

The star is located relatively close at a distance of 79 light years based on Gaia DR3 parallax measurements[1] but it is receding with a heliocentric radial velocity of 12.7 km/s.[5] Approximately 1.6 million years ago, HD 190422 was located 7.806 parsecs (25.46 ly) away from the Sun.[17]

HD 190422 has a stellar classification of F9 V CH−0.4,[3] indicating that it is a F-type main-sequence star with a mild underabundance of the CH radical in its spectrum. It has 125% the mass of the Sun[7] and 109% of the Sun's radius.[8] It radiates 1.534 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 6,235 K,[9] giving it a whitish-yellow hue. HD 190422 is slightly metal deficient with a metallicity of [Fe/H] = −0.13[10] and it spins modestly with a projected rotational velocity of 15.6 km/s.[12] The star is estimated to be 400 million years old,[13][3] less than a tenth the age of the Sun.

References

  1. ^ a b c d e f g Vallenari, A.; et al. (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. Gaia DR3 record for this source at VizieR.
  2. ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361. S2CID 17128864.
  3. ^ a b c d e Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2 June 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637. eISSN 1538-3881. ISSN 0004-6256. S2CID 250741593.
  4. ^ Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J. S2CID 118307502.
  5. ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
  6. ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
  7. ^ a b Chandler, Colin Orion; McDonald, Iain; Kane, Stephen R. (17 February 2016). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal. 151 (3): 59. arXiv:1510.05666. Bibcode:2016AJ....151...59C. doi:10.3847/0004-6256/151/3/59. eISSN 1538-3881. S2CID 119246448.
  8. ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants. Surface brightness relations calibrated by interferometry". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361. S2CID 6077801.
  9. ^ a b Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S. (26 May 2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s): Improved astrophysical parameters for the Geneva-Copenhagen Survey⋆". Astronomy & Astrophysics. 530: A138. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. eISSN 1432-0746. ISSN 0004-6361. S2CID 56118016.
  10. ^ a b Netopil, Martin (4 May 2017). "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system". Monthly Notices of the Royal Astronomical Society. 469 (3): 3042–3055. arXiv:1705.00883. Bibcode:2017MNRAS.469.3042N. doi:10.1093/mnras/stx1077. eISSN 1365-2966. ISSN 0035-8711. S2CID 119034918.
  11. ^ Oelkers, Ryan J.; Rodriguez, Joseph E.; Stassun, Keivan G.; Pepper, Joshua; Somers, Garrett; Kafka, Stella; Stevens, Daniel J.; Beatty, Thomas G.; Siverd, Robert J.; Lund, Michael B.; Kuhn, Rudolf B.; James, David; Gaudi, B. Scott (2018). "Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey". The Astronomical Journal. 155 (1): 39. arXiv:1711.03608. Bibcode:2018AJ....155...39O. doi:10.3847/1538-3881/aa9bf4. S2CID 119515775.
  12. ^ a b Ammler-von Eiff, M.; Reiners, A. (June 2012). "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?". Astronomy & Astrophysics. 542: A116. arXiv:1204.2459. Bibcode:2012A&A...542A.116A. doi:10.1051/0004-6361/201118724. eISSN 1432-0746. ISSN 0004-6361. S2CID 53666672.
  13. ^ a b Henry, Todd J.; Soderblom, David R.; Donahue, Robert A.; Baliunas, Sallie L. (January 1996). "A Survey of CA II H and K Chromospheric Emission in Southern Solar-Type Stars". The Astronomical Journal. 111: 439. Bibcode:1996AJ....111..439H. doi:10.1086/117796. ISSN 0004-6256. S2CID 120627407.
  14. ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
  15. ^ "HD 190422". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved March 31, 2023.
  16. ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.
  17. ^ Bailer-Jones, C. A. L. (19 February 2015). "Close encounters of the stellar kind". Astronomy & Astrophysics. 575: A35. arXiv:1412.3648. Bibcode:2015A&A...575A..35B. doi:10.1051/0004-6361/201425221. eISSN 1432-0746. ISSN 0004-6361. S2CID 59039482.

Read other articles:

مغن

مغن تسمية الإناث مغنية  فرع من منشد،  وموسيقي  المجال غناء  تعديل مصدري - تعديل   المغني أو المغنية هو الشخص الذي يستخدم صوته/صوتها لإنتاج موسيقى. عادة يرافق المغني موسيقيين وآلات موسيقية. في القاموس مُغَنّ، الْمُغَنِّيٌ هو اسم فاعل من غنَّى ويعني مُطرِب، محترف...

 

2003 Serbian presidential election

2003 Serbian presidential election ← December 2002 16 November 2003 2004 → Turnout38.79% ( 6.37 pp)   Candidate Tomislav Nikolić Dragoljub Mićunović Party SRS DC Alliance DOS Popular vote 1,166,896 893,906 Percentage 47.87% 36.67% President before election Nataša Mićić (acting) GSS Elected President Election results annulledNataša Mićić (acting) GSS Presidential elections were held in Serbia on 16 November 2003,[1] a month before the Dece...

 

Первородный грех

Об экономическом термине см. Первородный грех (экономика). ХристианствоБиблия Ветхий Завет Новый Завет Евангелие Десять заповедей Нагорная проповедь Апокрифы Бог, Троица Бог Отец Иисус Христос Святой Дух История христианства Апостолы Хронология христианства Ран...

Kleopatra Selene II

Cleopatra Selene IIIbu suri NumidiaIbu suri MauretaniaPatung dada Romawi kuno Cleopatra Selene II, Ratu Mauretania, atau ibunya Cleopatra VII dari Mesir, Museum Arkeologi Cherchell, Aljazair[1]Kelahiran40 SM (diyakini, tanggal pasti tidak diketahui)Alexandria, MesirKematian6 SMCaesarea, Kerajaan MauretaniaPemakamanMausoleum Kerajaan MauretaniaNama lengkapCleopatra SeleneAyahMarkus AntoniusIbuCleopatra VII PhilopatorPasanganJuba II dari NumidiaAnakPtolemy, Raja MauretaniaDrusilla Cleop...

 

مكتب مبعوث الأمين العام للشباب

مكتب مبعوث الأمين العام للشباب مكتب مبعوث الأمين العام للشباب‌ المقر الرئيسي نيويورك،  الولايات المتحدة تاريخ التأسيس 17 يناير 2013؛ منذ 11 سنة (2013-01-17) الموقع الرسمي الموقع الرسمي  تعديل مصدري - تعديل   مكتب مبعوث الأمين العام للشباب هو منصب تتجلى وظيفته في ا...

 

Sturehov Manor

Not to be confused with Sturehof. Sturehov ManorBotkyrka Municipality, Sweden Sturehov Manor, garden façadeCoordinates59°15′28.4″N 17°45′31.2″E / 59.257889°N 17.758667°E / 59.257889; 17.758667TypeManorSite informationOpen tothe publicYesSite historyBuilt byJohan Liljencrantz (owner)Carl Fredrik Adelcrantz (architect) Sturehov Manor (Swedish: Sturehovs slott; sometimes Sturehof) is a manor house in Botkyrka Municipality, a suburb of Stockholm...

Mérida Unión Deportiva

Mérida Unión DeportivaCalcio RomanosPecholatas Segni distintivi Uniformi di gara Casa Trasferta Colori sociali Bianco, nero Dati societari Città Mérida Nazione  Spagna Confederazione UEFA Federazione FEF Campionato Primera Federación Fondazione 1990 Scioglimento2013 Stadio Romano(14.600 posti) Sito web www.meridaud.com Palmarès Si invita a seguire il modello di voce Il Mérida Unión Deportiva era una società calcistica spagnola con sede nella città di Mérida, nella comunità a...

 

Alfred Döblin

Alfred Döblin. Bruno Alfred Döblin (10 Agustus 1878 - 26 Juni 1957) merupakan seorang novelis, pembuat esai, serta doktor berkebangsaan Jerman. Alfred Döblin memiliki nama pena Linke Poot. Ia lahir dari pasangan Max Döblin dan Sophie Döblin.[1] Alfred Döblin yang paling dikenal karena novel karyanya yang berjudul Berlin Alexanderplatz (1929), yang berkisah mengenai kehidupan modern metropolitan. Novel tersebut kemudian diadaptasi menjadi sandiwara radio pada tahun 1976, setelahn...

 

List of dams and reservoirs in Michigan

Following is a list of dams and reservoirs in Michigan. Major dams are linked below. The National Inventory of Dams defines any major dam as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m3).[1] Dams and reservoirs in Michigan Croton Dam powerhouse White Rapids Dam, Menominee River This list is incomplete. You can help Wikipedia by expanding it. Alco...

KKFM

Radio station in Colorado Springs, Colorado KKFMColorado Springs, ColoradoBroadcast areaColorado Springs, ColoradoPueblo, ColoradoFrequency98.1 MHzBrandingClassic Rock 98.1 KKFMProgrammingLanguage(s)EnglishFormatClassic rockAffiliationsWestwood OneOwnershipOwnerCumulus Media(Radio License Holding CBC, LLC)Sister stationsKATC, KCSF, KKMG, KKPK, KVORHistoryFirst air dateMay 2, 1959 (1959-05-02) (on 96.5)Former frequencies96.5 MHz (1959–1992)Technical information[1]Licen...

 

Джаккино, Майкл

В Википедии есть статьи о других людях с фамилией Джаккино. Майкл Джаккиноангл. Michael Giacchino Основная информация Дата рождения 10 октября 1967(1967-10-10)[1][2] (56 лет) Место рождения Риверсайд, Нью-Джерси, США Страна  США[3] Профессии кинокомпозитор Годы актив...

 

2020年夏季奧林匹克運動會波蘭代表團

2020年夏季奥林匹克运动会波兰代表團波兰国旗IOC編碼POLNOC波蘭奧林匹克委員會網站olimpijski.pl（英文）（波兰文）2020年夏季奥林匹克运动会（東京）2021年7月23日至8月8日（受2019冠状病毒病疫情影响推迟，但仍保留原定名称）運動員206參賽項目24个大项旗手开幕式：帕维尔·科热尼奥夫斯基（游泳）和马娅·沃什乔夫斯卡（自行车）[1]闭幕式：卡罗利娜·纳亚（皮划艇）&#...

Straight edge

Subculture of hardcore punk This article is about the punk subculture. For the tool used for drawing straight lines, see Straightedge. For the song from which the subculture takes its name, see Straight Edge (song). A straight edge tattoo Straight edge (sometimes abbreviated as sXe or signified by XXX or simply X) is a subculture of hardcore punk whose adherents refrain from using alcohol, tobacco, and recreational drugs in reaction to the punk subculture's excesses.[1][2][...

 

How I Met Your Mother

American sitcom (2005–2014) How I Met Your MotherThe cast pictured in the opening sequenceGenre Sitcom Romantic comedy Comedy drama Created by Carter Bays Craig Thomas Directed by Pamela Fryman Rob Greenberg Michael Shea Neil Patrick Harris Starring Josh Radnor Jason Segel Cobie Smulders Neil Patrick Harris Alyson Hannigan Cristin Milioti Narrated byBob SagetOpening themeHey, Beautiful by The SolidsComposerJohn SwihartCountry of originUnited StatesOriginal languageEnglishNo. of seasons9No. ...

 

フィリピン大気地球物理天文局

Philippine Atmospheric, Geophysical and Astronomical Services Administration（フィリピン大気地球物理天文局）Pangasiwaan ng Pilipinas sa Serbisyong Atmosperiko, Heopisiko, at AstronomikoPAGASAのロゴ組織の概要設立年月日1972年12月8日継承後組織気象局管轄Philippine Area of Responsibility (PAR)本部所在地Science Garden, Agham Road, Diliman, Quezon City北緯14度38分37.1秒 東経121度2分39.8秒 / 北緯14.643639度 東経121.044389...

Fermat's principle

Principle of least time For other theorems named after Pierre de Fermat, see Fermat's theorem. Fig. 1: Fermat's principle in the case of refraction of light at a flat surface between (say) air and water. Given an object-point A in the air, and an observation point B in the water, the refraction point P is that which minimizes the time taken by the light to travel the path APB. If we seek the required value of x, we find that the angles α and β satisfy Snell's law. Fermat's p...

 

Subdialetto bivonese

Subdialetto bivonesevivunisiParlato in Italia Regioni Sicilia LocutoriTotale4.000 circa Altre informazioniScritturaAlfabeto latino (siciliano) TipoSOV TassonomiaFilogenesiLingue indoeuropee Italiche  Romanze   Siciliano    Dialetti siciliani occidentali     Dialetti agrigentini centrali      Subdialetto bivonese Estratto in linguaDichiarazione universale dei diritti umani, art. 1Tutti...

 

Antonio Costa

Disambiguazione – Se stai cercando altri significati, vedi Antonio Costa (disambigua). Padre Gabriele Maria Costa (nato Antonio) Dom[1] Antonio Alberto Luigi Costa, in religione Gabriele (Massa Lombarda, 16 settembre 1898 – Fosse del Frigido, 10 settembre 1944), è stato un monaco cristiano e presbitero italiano, medaglia d'oro al valor militare. Indice 1 Biografia 2 Onorificenze 3 Opere 4 Intitolazioni 5 Note 6 Bibliografia 7 Voci correlate 8 Collegamenti esterni Biografia Anton...

Michel IV le Paphlagonien

Vous lisez un « bon article » labellisé en 2022. Michel IV le Paphlagonien Empereur byzantin Histamenon du règne de Michel IV qui porte la couronne et le loros tenant à la main le labarum et le globe surmonté d'une croix (verso). Règne 12 avril 1034 - 10 décembre 1041(7 ans, 7 mois et 29 jours) Période Macédonienne Précédé par Zoé PorphyrogénèteRomain III Argyre Co-empereur Zoé Porphyrogénète (1028-1050) Suivi de Zoé PorphyrogénèteMichel V Biogr...

 

Élections en Iran

L'Iran élit au suffrage universel le chef du gouvernement (le président de la république), une législature (le Majlis d'Iran) et une assemblée des experts (qui élit le chef de l'état, le Guide suprême). Des élections locales ont lieu tous les quatre ans à travers le pays. Le président est élu par le peuple pour un mandat de quatre ans, renouvelable une fois. Le Parlement, ou Assemblée Consultative Islamique (Majlis-e Shura-ye Eslami) compte 290 membres, élus pour quatre ans...