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74 Orionis

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This article is about k Orionis. Not to be confused withκ Orionis.
74 Orionis
Observation data
EpochJ2000EquinoxJ2000
Constellation Orion
Right ascension 06h16m26.61878s[1]
Declination 12° 16′ 19.7909″[1]
Apparent magnitude(V) 5.04[2]
Characteristics
Evolutionary stage main sequence
Spectral type F5V[3]
U−Bcolor index -0.02[4]
B−Vcolor index +0.42[4]
Astrometry
Radial velocity(Rv)+9.17[5]km/s
Proper motion(μ)RA:+83.102[1]mas/yr
Dec.:+186.263[1]mas/yr
Parallax(π)51.1930 ± 0.1907mas[1]
Distance63.7 ± 0.2ly
(19.53 ± 0.07pc)
Absolute magnitude(MV)3.62[2]
Details
Mass1.39[6]M☉
Radius1.3[7]R☉
Luminosity3.02[2]L☉
Surface gravity(logg)4.34[6]cgs
Temperature6,595[6]K
Metallicity[Fe/H]-0.03[2]dex
Rotational velocity(vsini)18.8[8]km/s
Age2.316[6]Gyr
Other designations
k Ori,74 Ori,BD+12°1084,FK51169,GC8033,GJ9207,HD43386,HIP29800,HR2241,SAO95476,CCDMJ06165+1216A,WDSJ06164+1216A,LTT11823[9]
Database references
SIMBADdata

74 Orionisis a single[10]starin theequatorialconstellationofOrion.It has theBayer designationk Orionis,while74 Orionisis theFlamsteed designation.This object is visible to the naked eye as a faint, yellow-white hued point of light with anapparent visual magnitudeof 5.04.[2]It is located at a distance of 64light yearsfrom the Sun based onparallax,[1]and is drifting further away with aradial velocityof +9 km/s.[5]The star has a relatively highproper motion,traversing thecelestial sphereat the rate of 0.204arc secondsper annum.[11]

This object is an ordinaryF-type main-sequence starwith astellar classificationof F5V.[3]It is an estimated 2.3[6]billion years old and is spinning with aprojected rotational velocityof 18.8 km/s.[8]The star has 1.4[6]times themass of the Sunand 1.3[7]times theSun's radius.Metallicityis near solar,[2]which indicates it has a Sun-like abundances of elements. The star is radiating three[2]times theluminosity of the Sunfrom itsphotosphereat aneffective temperatureof 6,595 K.[6]

74 Orionis has twovisual companions:component B, with magnitude 12.5 and separation 32.1 ", and C, with magnitude 9.0 and separation 195.5".[12]

References

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  1. ^abcdefBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData 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 sourceatVizieR.
  2. ^abcdefgAnderson, 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.S2CID119257644.Vizier catalog entry
  3. ^abGray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Robinson, P. E. (2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I".The Astronomical Journal.126(4): 2048.arXiv:astro-ph/0308182.Bibcode:2003AJ....126.2048G.doi:10.1086/378365.S2CID119417105.
  4. ^abMallama, A. (2014). "Sloan Magnitudes for the Brightest Stars".The Journal of the American Association of Variable Star Observers.42(2): 443.Bibcode:2014JAVSO..42..443M.Vizier catalog entry
  5. ^abMaldonado, J.; Martínez-Arnáiz, R. M.; Eiroa, C.; Montes, D.; Montesinos, B. (2010). "A spectroscopy study of nearby late-type stars, possible members of stellar kinematic groups".Astronomy and Astrophysics.521:A12.arXiv:1007.1132.Bibcode:2010A&A...521A..12M.doi:10.1051/0004-6361/201014948.S2CID119209183.
  6. ^abcdefgDavid, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets".The Astrophysical Journal.804(2): 146.arXiv:1501.03154.Bibcode:2015ApJ...804..146D.doi:10.1088/0004-637X/804/2/146.S2CID33401607.Vizier catalog entry
  7. ^abAllende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures".Astronomy and Astrophysics.352:555–562.arXiv:astro-ph/9911002.Bibcode:1999A&A...352..555A.Vizier catalog entry
  8. ^abDe Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars".Astronomy and Astrophysics Supplement Series.139(3): 433.arXiv:astro-ph/0608248.Bibcode:1999A&AS..139..433D.doi:10.1051/aas:1999401.Vizier catalog entry
  9. ^"74 Ori".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2019-08-08.
  10. ^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,S2CID14878976.
  11. ^Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog) ",The Astronomical Journal,129(3): 1483–1522,arXiv:astro-ph/0412070,Bibcode:2005AJ....129.1483L,doi:10.1086/427854,S2CID2603568.
  12. ^Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001)."The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog".The Astronomical Journal.122(6): 3466.Bibcode:2001AJ....122.3466M.doi:10.1086/323920.Vizier catalog entry
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