HD 44131

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HD 44131
Orion constellation map.svg
Red circle.svg
Location of HD 44131 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Orion
Right ascension  06h 19m 59.60059s[1]
Declination −2° 56′ 40.1765″[1]
Apparent magnitude (V) 4.91[2]
Spectral type M1III[3]
U−B color index +1.96[4]
B−V color index +1.60[4]
Radial velocity (Rv)+48.60[5] km/s
Proper motion (μ) RA: -6.42[1] mas/yr
Dec.: -1.26[1] mas/yr
Parallax (π)7.02 ± 0.23[1] mas
Distance460 ± 20 ly
(142 ± 5 pc)
Absolute magnitude (MV)-0.86[2]
Luminosity606[6] L
Temperature3,914[6] K
Other designations
BD-02°1564, GC 8137, HIP 30093, HR 2275, HD 44131, NSV 2918, SAO 133118
Database references

HD 44131 is a class M1III[3] (red giant) star in the constellation Orion. Its apparent magnitude is 4.91[2] and it is approximately 465 light years away based on parallax.[1]


  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ^ a b c 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. Vizier catalog entry
  3. ^ a b Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
  4. ^ a b Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42: 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry
  5. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  6. ^ a b McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427: 343. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. Vizier catalog entry