OU Andromedae

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OU Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 23h 49m 40.961s[1]
Declination +36° 25′ 31.01″[1]
Apparent magnitude (V) 5.87 - 5.94[2]
Characteristics
Spectral type G1IIIe
B−V color index 0.79
Variable type FK Com[2]
Astrometry
Radial velocity (Rv) 0.7 km/s
Proper motion (μ) RA: 1.01 ± 0.41[1] mas/yr
Dec.: -47.59 ± 0.26[1] mas/yr
Parallax (π) 7.71 ± 0.34[1] mas
Distance 420 ± 20 ly
(130 ± 6 pc)
Details
Mass 2.8−3.1[3] M
Radius 10−13[3] R
Luminosity 61−104[3] L
Temperature 5,110[3] K
Rotation 23 d[3]
Other designations
FK5 3914, HIP 117503, SAO 73535, BD+35° 5110, HR 9024, HD 223460.
Database references
SIMBAD data

OU Andromedae is a rotationally variable star. It has an X-ray emission of 8.2 × 1030 erg s−1.[4] Varying between magnitudes 5.87 and 5.94, it has been classified as an FK Comae Berenices variable.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ^ a b Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S. 
  3. ^ a b c d e Gondoin, P. (December 2005), "The relation between X-ray activity and rotation in intermediate-mass G giants", Astronomy and Astrophysics, 444 (2): 531−538, Bibcode:2005A&A...444..531G, doi:10.1051/0004-6361:20053567. 
  4. ^ Gondoin, P. (December 1999), "Evolution of X-ray activity and rotation on G-K giants", Astronomy and Astrophysics, 352: 217–227, Bibcode:1999A&A...352..217G