Binary star system in the constellation Andromeda
59 Andromedae
Location of 59 Andromedae (circled)
Observation dataEpoch J2000 Equinox J2000
Constellation Andromeda
59 And A
Right ascension 02h 10m 52.82451s [ 1]
Declination +39° 02′ 22.3597″[ 1]
Apparent magnitude (V)6.09[ 2]
59 And B
Right ascension 02h 10m 53.65687s [ 1]
Declination +39° 02′ 35.9164″[ 1]
Apparent magnitude (V)6.82[ 2]
Characteristics
59 And A
Spectral type
B9 V[ 3]
B−V color index
± 0.006[ 2]
59 And B
Spectral type
A1 Vn[ 3]
B−V color index
± 0.005[ 2]
Astrometry 59 And A Radial velocity (Rv )± 3.4[ 4] km/s Proper motion (μ) RA: −13.506[ 1] mas /yr Dec.: −14.981[ 1] mas /yr Parallax (π)7.1469± 0.1007 mas [ 1] Distance 456 ± 6 ly pc ) 59 And B Radial velocity (Rv )± 4.6[ 4] km/s Proper motion (μ) RA: −9.166[ 1] mas /yr Dec.: −17.208[ 1] mas /yr Parallax (π)7.4166± 0.0619 mas [ 1] Distance 440 ± 4 ly pc ) Details 59 And A Radius 2.73[ 5] R ☉ Luminosity 83.97[ 6] L ☉ Temperature 10,870[ 6] K Rotational velocity (v sin i )176[ 3] 59 And B Mass ± 0.09[ 7] M ☉ Radius 2.59[ 5] R ☉ Luminosity +7.6 [ 7] L ☉ Temperature 9,498[ 6] K Rotational velocity (v sin i )233[ 3] Other designations 59 And , BD +38°425ADS 1683WDS J02109+3902[ 8] 59 And A : GC 2600HD 13294HIP 10176HR 628SAO 55330PPM 67045[ 9] 59 And B : GC 2602HD 13295HIP 10180HR 629SAO 55331PPM 67046[ 10] Database references SIMBAD A B
59 Andromedae , abbreviated 59 And , is a sixth-magnitude binary star system in the northern constellation of Andromeda . 59 Andromedae is the Flamsteed designation . As of 2017, the pair had an angular separation of ″ position angle (PA) of 36°. Compare this to a separation of [ 11] AU [ 5]
The magnitude 6.09[ 2] B-type main-sequence star with a stellar classification of B9 V.[ 3] [ 5] Sun's radius and is radiating 84 times the Sun's luminosity from its photosphere at an effective temperature of 10,870 K.[ 6] projected rotational velocity of 176 km/s.[ 3]
The secondary is a magnitude 6.82[ 2] A-type main-sequence star with a class of A1 Vn,[ 3] lines due to rapid rotation. It is spinning with a high projected rotational velocity of 233 km/s.[ 3] [ 7] [ 5] [ 7] [ 6]
References
^ a b c d e f g h i j Brown, 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 ^ 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 . ^ a b c d e f g h Royer, F.; et al. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics , 463 (2): 671– 682, arXiv :astro-ph/0610785 Bibcode :2007A&A...463..671R , doi :10.1051/0004-6361:20065224 , S2CID 18475298 ^ a b de 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. ^ a b c d e Howe, K. S.; Clarke, C. J. (January 2009), "An analysis of v sin (i) correlations in early-type binaries", Monthly Notices of the Royal Astronomical Society 392 (1): 448– 454, Bibcode :2009MNRAS.392..448H , doi :10.1111/j.1365-2966.2008.14073.x ^ a b c d e McDonald, I.; Zijlstra, A. A.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society , 427 (1): 343– 357, arXiv :1208.2037 Bibcode :2012MNRAS.427..343M , doi :10.1111/j.1365-2966.2012.21873.x S2CID 118665352 . ^ a b c d Zorec, 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. ^ "59 And" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved October 3, 2018 .^ "59 And A" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved October 3, 2018 .^ "59 And B" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved October 3, 2018 .^ Mason, B. D.; et al. (December 2001), "The Washington Visual Double Star Catalog", The Astronomical Journal , 122 (6): 3466– 3471, Bibcode :2001AJ....122.3466M , doi :10.1086/323920
External links
