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
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 2.9[3] M
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.[3] Varying between magnitudes 5.87 and 5.94, it has been classified as an FK Comae Berenicis variable.[2]

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. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ^ a b Watson, Christopher (4 January 2010). "OU Andromedae". AAVSO Website. American Association of Variable Star Observers. Retrieved 17 July 2015. 
  3. ^ a b 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