49 Cassiopeiae
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 | |
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
- ↑ "* 49 Cas". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 31, 2007.
- ↑ "CCDM J02056+7607B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 31, 2007.
- 1 2 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:0805.2434, Bibcode:2008PASJ...60..781T, doi:10.1093/pasj/60.4.781.
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