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62 Andromedae

From Wikipedia, the free encyclopedia
Star in the constellation Andromeda
62 Andromedae
Location of 62 Andromedae (circled)
Observation data
Epoch J2000      Equinox J2000
ConstellationAndromeda[1]
Right ascension02h 19m 16.79693s[2]
Declination+47° 22′ 47.9132″[2]
Apparent magnitude (V)5.31[3]
Characteristics
Spectral typeA0V[4]
B−Vcolor index0.00425[5]
Astrometry
Radial velocity (Rv)−29.6±2.8[6] km/s
Proper motion (μ)RA: –60.03[7]mas/yr
Dec.: –5.61[7]mas/yr
Parallax (π)11.9531±0.1640 mas[2]
Distance273 ± 4 ly
(84 ± 1 pc)
Absolute magnitude (MV)0.93[1]
Details
Mass2.42±0.02[8] M
Radius1.8[3] R
Luminosity45.2+2.1
−1.9
[8] L
Temperature9,572+133
−131
[8] K
Rotational velocity (v sin i)86[9] km/s
Other designations
c Andromedae[10],62 And,BD+46°552,FK5 1063,HD 14212,HIP 10819,HR 670,SAO 37948,PPM 44986[11]
Database references
SIMBADdata

62 Andromedae is a single[12]star in the northernconstellationAndromeda.[1]62 Andromedae is theFlamsteed designation, abbreviated62 And;[11] it also bears theBayer designation ofc Andromedae.[10] It is bright enough to be seen by thenaked eye, with anapparent magnitude of 5.31. Based upon parallax measurements made during theGaia mission, it is at a distance of roughly 273 light-years (84 pc) from Earth.[2] The star is moving closer to the Earth with a heliocentricradial velocity of −30 km/s,[6] and is predicted to come to within 144.6 light-years in 1.6 million years.[1]

This is anA-type main-sequence star with astellar classification of A0 V.[13] Abt and Morrel (1995) gave it a class of A1 III,[14][1] matching a moreevolvedgiant star. The star has 2.42[8] times themass of the Sun, about 1.8[3] times theSun's radius, and is spinning with aprojected rotational velocity of 86 km/s.[8] It is radiating 45[8] times theSun's luminosity from itsphotosphere at aneffective temperature of 9,572 K.[8] 62 And is about 57% of the way through its main sequence lifetime.[8]

References

[edit]
  1. ^abcdeAnderson, 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.
  2. ^abcdBrown, A. G. A.; et al. (Gaia collaboration) (August 2018)."Gaia Data 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 source atVizieR.
  3. ^abcPasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics",Astronomy & Astrophysics,367 (2):521–524,arXiv:astro-ph/0012289,Bibcode:2001A&A...367..521P,doi:10.1051/0004-6361:20000451.
  4. ^van Belle, Gerard T.; von Braun, Kaspar (2009), "Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars",The Astrophysical Journal,694 (2):1085–1098,arXiv:0901.1206,Bibcode:2009ApJ...694.1085V,doi:10.1088/0004-637X/694/2/1085,S2CID 18370219.
  5. ^Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars",Astronomy & Astrophysics,355:L27 –L30,Bibcode:2000A&A...355L..27H.
  6. ^abde Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project",Astronomy & Astrophysics,546: 14,arXiv:1208.3048,Bibcode:2012A&A...546A..61D,doi:10.1051/0004-6361/201219219,S2CID 59451347, A61.
  7. ^abvan 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
  8. ^abcdefghZorec, J.; Royer, F. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities",Astronomy & Astrophysics,537: A120,arXiv:1201.2052,Bibcode:2012A&A...537A.120Z,doi:10.1051/0004-6361/201117691,S2CID 55586789, A120.
  9. ^Royer, F.; et al. (2002), "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i",Astronomy & Astrophysics,393 (3):897–911,arXiv:1201.2052,Bibcode:2002A&A...393..897R,doi:10.1051/0004-6361:20020943,S2CID 14070763.
  10. ^abTirion, Wil; Rappaport, Barry (1987), Remaklus, Will (ed.),Uranometria 2000.0 - Volume II - The Southern Hemisphere to +6°, Richmond, Virginia, USA,ISBN 0-943396-15-8.
  11. ^ab"62 And".SIMBAD.Centre de données astronomiques de Strasbourg. RetrievedOctober 4, 2018.
  12. ^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.
  13. ^van Belle, Gerard T.; von Braun, Kaspar (2009), "Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars",The Astrophysical Journal (abstract),694 (2):1085–1098,arXiv:0901.1206,Bibcode:2009ApJ...694.1085V,doi:10.1088/0004-637X/694/2/1085,S2CID 18370219
  14. ^Abt, Helmut A.; Morrell, Nidia I. (July 1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars",Astrophysical Journal Supplement,99: 135,Bibcode:1995ApJS...99..135A,doi:10.1086/192182.
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