16 Persei

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16 Persei
Perseus constellation map.svg
Red circle.svg
Location of 16 Persei (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 02h 50m 35.05979s[1]
Declination 38° 19′ 07.1080″[1]
Apparent magnitude (V) 4.22[2]
Spectral type F2III[3]
U−B color index +0.08[4]
B−V color index +0.34[4]
Radial velocity (Rv)+14.00[5] km/s
Proper motion (μ) RA: +195.77[1] mas/yr
Dec.: -109.98[1] mas/yr
Parallax (π)27.01 ± 0.19[1] mas
Distance120.8 ± 0.8 ly
(37.0 ± 0.3 pc)
Absolute magnitude (MV)1.38[2]
Mass1.92[6] M
Radius3.2[6] R
Luminosity23.36[2] L
Surface gravity (log g)3.72[7] cgs
Temperature7,004[7] K
Metallicity [Fe/H]-0.04[2] dex
Rotational velocity (v sin i)149[3] km/s
Other designations
BD+37°646, CCDM J02506+3818A, FK5 2194, GC 3401, HIP 13254, HR 840, HD 17584, LTT 10924, NSV 956, SAO 55928, WDS J02506+3819A
Database references

16 Persei (16 Per) is a class F2III[3] (yellow-white giant) star in the constellation Perseus. Its apparent magnitude is 4.22[2] and it is approximately 120.8 light years away based on parallax.[1]

It has two reported companions: B, with magnitude 12.8 and separation 76.7", and C, with magnitude 10.43 and separation 234".[8]


  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c d e Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971Freely accessible. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.  Vizier catalog entry
  3. ^ a b c 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. ^ Wilson, R. E. (1953). General Catalogue of Stellar Radial Velocities. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN 54001336. 
  6. ^ a b 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. arXiv:astro-ph/9911002Freely accessible. Bibcode:1999A&A...352..555A.  Vizier catalog entry
  7. ^ a b 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:1501.03154Freely accessible. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146.  Vizier catalog entry
  8. ^ 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