74 Orionis

Last updated
74 Orionis
Observation data
Epoch J2000       Equinox J2000
Constellation Orion
Right ascension 06h 16m 26.61878s [1]
Declination 12° 16′ 19.7909″ [1]
Apparent magnitude  (V)5.04 [2]
Characteristics
Evolutionary stage main sequence
Spectral type F5V [3]
U−B color index -0.02 [4]
B−V color 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 ± 0.1907  mas [1]
Distance 63.7 ± 0.2  ly
(19.53 ± 0.07  pc)
Absolute magnitude  (MV)3.62 [2]
Details
Mass 1.39 [6]   M☉
Radius 1.3 [7]   R☉
Luminosity 3.02 [2]   L☉
Surface gravity (log g)4.34 [6]   cgs
Temperature 6,595 [6]   K
Metallicity [Fe/H]-0.03 [2]   dex
Rotational velocity (v sin i)18.8 [8]  km/s
Age 2.316 [6]   Gyr
Other designations
k Ori, 74 Ori, BD+12°1084, FK5  1169, GC  8033, GJ  9207, HD  43386, HIP  29800, HR  2241, SAO  95476, CCDM J06165+1216A, WDS J06164+1216A, LTT  11823 [9]
Database references
SIMBAD data

74 Orionis is a single [10] star in the equatorial constellation of Orion. It has the Bayer designation k Orionis, while 74 Orionis is the Flamsteed designation. This object is visible to the naked eye as a faint, yellow-white hued point of light with an apparent visual magnitude of 5.04. [2] It is located at a distance of 64  light years from the Sun based on parallax, [1] and is drifting further away with a radial velocity of +9 km/s. [5] The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.204  arc seconds per annum. [11]

This object is an ordinary F-type main-sequence star with a stellar classification of F5V. [3] It is an estimated 2.3 [6]  billion years old and is spinning with a projected rotational velocity of 18.8 km/s. [8] The star has 1.4 [6] times the mass of the Sun and 1.3 [7] times the Sun's radius. Metallicity is near solar, [2] which indicates it has a Sun-like abundances of elements. The star is radiating three [2] times the luminosity of the Sun from its photosphere at an effective temperature of 6,595 K. [6]

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

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References

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  2. 1 2 3 4 5 6 7 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. Vizier catalog entry
  3. 1 2 Gray, 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. S2CID   119417105.
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  5. 1 2 Maldonado, 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. S2CID   119209183.
  6. 1 2 3 4 5 6 7 David, 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. S2CID   33401607. Vizier catalog entry
  7. 1 2 Allende 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. 1 2 De 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 . Retrieved 2019-08-08.
  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, S2CID   14878976.
  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, S2CID   2603568.
  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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