Kappa Andromedae

"19 Andromedae" redirects here. For the galaxy, see Andromeda XIX.
Kappa Andromedae
Location of κ Andromedae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 23h 40m 24.50763s[1]
Declination +44° 20′ 02.1566″[1]
Apparent magnitude (V) 4.139[2]
Characteristics
Spectral type B9 IVn[3]
U−B color index -0.221[2]
B−V color index -0.067[2]
Astrometry
Radial velocity (Rv)−15.0[4] km/s
Proper motion (μ) RA: +80.73[1] mas/yr
Dec.: -18.70[1] mas/yr
Parallax (π)19.37 ± 0.19 mas[1]
Distance168 ± 2 ly
(51.6 ± 0.5 pc)
Absolute magnitude (MV)+0.59[5]
Details
Mass2.768+0.1
−0.109[6] M☉
Radius2.29±0.06[7] R☉
Luminosity78.5[7] L☉
Surface gravity (log g)4.10±0.03[8] cgs
Temperature11,361±66[8] K
Rotational velocity (v sin i)176[9] km/s
Age47+27
−40[6] Myr
Other designations
κ And, 19 Andromedae, BD+43°4522, FK5 1619, HD 222439, HIP 116805, HR 8976, SAO 53264, PPM 64525[10]
Database references
SIMBADdata

Kappa Andromedae, Latinized from κ Andromedae, is the Bayer designation for a bright star in the northern constellation of Andromeda. It is visible to the naked eye with an apparent visual magnitude of 4.1.[2] Based on the star's ranking on the Bortle Dark-Sky Scale, it is luminous enough to be visible from the suburbs and from urban outskirts, but not from brightly lit inner city regions. Parallax measurements made during the Hipparcos mission place it at a distance of approximately 168 light-years (52 parsecs) from the Sun.[1] It is drifting closer with a radial velocity of −15 km/s,[4] and there is a high likelihood (86%) that it is a member of the Beta Pictoris moving group.[11] The star has one known companion exoplanet, Kappa Andromedae b.[12]

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  12. ^ Cite error: The named reference carson2012 was invoked but never defined (see the help page).