49 Cassiopeiae

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49 Cassiopeiae AB[1] [2]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cassiopeia
Right ascension A:02h 05m 31.5481s
B:02h 05m 30.0s
Declination A:+76° 06′ 54.218″
B:+76° 06′ 54″
Apparent magnitude (V) 5.225 / 12.3
Characteristics
Spectral type G8III / ?
Astrometry
Radial velocity (Rv) 0.0 / ? km/s
Proper motion (μ) RA: -12.19 / ? mas/yr
Dec.: -20.49 / ? mas/yr
Parallax (π) 7.65 ± 0.52 mas
Distance 430 ± 30 ly
(131 ± 9 pc)
Absolute magnitude (MV) −0.44[3]
Details[3]
Mass 3.19 M
Luminosity 151 L
Surface gravity (log g) 2.52 cgs
Temperature 5011 K
Metallicity [Fe/H] −0.03 dex
Age 302 Myr
Other designations
49 Cassiopeiae, HR 592, BD+75°86, HD 12339, SAO 4565, HIP 9763, GC 2475, GSC 04495-01881, CCDM J02056+7607
Database references
SIMBAD data

49 Cassiopeiae is a binary star system in the constellation Cassiopeia, approximately 430 light years away from Earth. The main star, 5th magnitude 49 Cassiopeiae A, is a yellow giant star of the spectral type G8III. It is in the same temperature range as the Sun, 5,000 to 6,000 kelvins. It is many times larger and more luminous. Its companion, 12th magnitude 49 Cassiopeiae B, is much fainter and of an unknown spectral type.

References[edit]

  1. ^ "* 49 Cas". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 31, 2007. 
  2. ^ "CCDM J02056+7607B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 31, 2007. 
  3. ^ a b Takeda, Yoichi; et al. (August 2008), "Stellar Parameters and Elemental Abundances of Late-G Giants", Publications of the Astronomical Society of Japan, 60 (4): 781–802, arXiv:0805.2434Freely accessible, Bibcode:2008PASJ...60..781T, doi:10.1093/pasj/60.4.781.