Star in the constellation Perseus
16 Persei
Location of 16 Persei (circled)
Observation dataEpoch J2000 Equinox J2000
Constellation
Perseus
Right ascension
02h 50m 35.05979s [ 1]
Declination
38° 19′ 07.1080″[ 1]
Apparent magnitude (V)
4.22[ 2]
Characteristics
Spectral type
F2III[ 3]
U−B color index
+0.08[ 4]
B−V color index
+0.34[ 4]
Variable type
δ Sct (?)[ 5] [ 6]
Astrometry Radial velocity (Rv )+14.00[ 7] km/s Proper motion (μ) RA: +195.77[ 1] mas /yr Dec.: −109.98[ 1] mas /yr Parallax (π)27.01 ± 0.19 mas [ 1] Distance 120.8 ± 0.8 ly (37.0 ± 0.3 pc ) Absolute magnitude (MV )1.38[ 2]
Details Mass 1.80[ 8] M ☉ Radius 3.2[ 9] R ☉ Luminosity 23.36[ 2] L ☉ Surface gravity (log g )3.72[ 10] cgs Temperature 7,004[ 10] K Metallicity [Fe/H]−0.04[ 2] dex Rotational velocity (v sin i )149[ 3] km/s Age 1.44[ 8] Gyr
Other designations 16 Per ,
NSV 956,
BD +37°646,
FK5 2194,
GC 3401,
HD 17584,
HIP 13254,
HR 840,
SAO 55928,
CCDM J02506+3818A,
LTT 10924
[ 11]
Database references SIMBAD data
16 Persei is a single,[ 12] suspected variable star [ 6] in the northern constellation of Perseus , located approximately 121 light years away based on parallax.[ 1] It is visible to the naked eye as a yellow-white hued star with an apparent visual magnitude of 4.22.[ 2] This object is moving further from the Earth with a heliocentric radial velocity of +14 km/s.[ 7] It displays a relatively high proper motion , traversing the celestial sphere at the rate of 0.224″ per year.[ 13]
Based upon a stellar classification of F2 III,[ 3] this matches an aging giant star that has exhausted the hydrogen at its core and is evolving away from the main sequence . It is a possible pulsating Delta Scuti variable , although there is some uncertainty about this classification.[ 6] However, Kunzli and North (1998) found no variation.[ 14] The star is 1.44[ 8] billion years old with 1.8[ 8] times the mass of the Sun and 3.2[ 9] times the Sun's radius . It shows a high rotation rate with a projected rotational velocity of 149 km/s,[ 3] which is causing an equatorial bulge that is an estimated 24% larger than the polar radius.[ 15] 16 Persei is radiating 23[ 2] times the Sun's luminosity from its photosphere at an effective temperature of 7,004 K.[ 10]
It has two reported visual companions: B, with magnitude 12.8 and separation 76.7", and C, with magnitude 10.43 and separation 234".[ 16]
^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics . 474 (2): 653–664. arXiv :0708.1752 . Bibcode :2007A&A...474..653V . doi :10.1051/0004-6361:20078357 . S2CID 18759600 . Vizier catalog entry
^ a b c d e f 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
^ a b c d 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 .
^ 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
^ "NSV 956" . The International Variable Star Index . AAVSO – American Association of Variable Star Observers. Retrieved 17 February 2019 .
^ a b c Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports . 5.1. 61 (1): 80–88. Bibcode :2017ARep...61...80S . doi :10.1134/S1063772917010085 . S2CID 125853869 .
^ a b Wilson, R. E. (1953). General Catalogue of Stellar Radial Velocities . Carnegie Institution for Science . Bibcode :1953GCRV..C......0W . LCCN 54001336 .
^ a b c d Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal , 150 (3), 88, arXiv :1507.01466 , Bibcode :2015AJ....150...88L , doi :10.1088/0004-6256/150/3/88 , S2CID 118505114 .
^ 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 : 555–562. arXiv :astro-ph/9911002 . Bibcode :1999A&A...352..555A . Vizier catalog entry
^ a b c 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
^ "16 Per" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2019-04-01 .
^ 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 . {{cite journal }}
: CS1 maint: unflagged free DOI (link )
^ 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 .
^ Kunzli, M.; North, P. (January 1998). "Are metallic A-F giants evolved AM stars? Rotation and rate of binaries among giant F stars". Astronomy and Astrophysics Supplement . 127 (2): 277–294. arXiv :astro-ph/9710226 . Bibcode :1998A&AS..127..277K . doi :10.1051/aas:1998350 . S2CID 7535170 .
^ van Belle, Gerard T. (March 2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review , 20 (1): 51, arXiv :1204.2572 , Bibcode :2012A&ARv..20...51V , doi :10.1007/s00159-012-0051-2 , S2CID 119273474 .
^ 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