6 Cassiopeiae

6 Cassiopeiae
Location of 6 Cassiopeiae (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cassiopeia
Right ascension 23h 48m 50.171s[1]
Declination +62° 12′ 52.26″[1]
Apparent magnitude (V) +5.43[2] (5.34 - 5.45[3])
Characteristics
Spectral type A2.5 Ia+[4]
U−B color index −0.02[2]
B−V color index +0.67[2]
Variable type α Cyg[3]
Astrometry
Proper motion (μ) RA: −3.57±0.35[1] mas/yr
Dec.: −1.57±0.33[1] mas/yr
Parallax (π)0.53 ± 0.37 mas[1]
Distance2,510[5] pc
Absolute magnitude (MV)−8.30[6]
Details
Mass22.0[6] M
Radius193[6] R
Luminosity200,000[7] L
Surface gravity (log g)1.59[8] cgs
Temperature10,023±227[8] K
Metallicity [Fe/H]0.29[8] dex
Rotational velocity (v sin i)50[6] km/s
Other designations
6 Cas, V566 Cas, HR 9018, HD 223385, BD+61°2533, HIP 117447, SAO 20869
Database references
SIMBADdata

6 Cassiopeiae (6 Cas) is a white hypergiant in the constellation Cassiopeia, and a small-amplitude variable star.

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  7. ^ Achmad, L.; Lamers, H. J. G. L. M.; Pasquini, L. (1997). "Radiation driven wind models for A, F and G supergiants". Astronomy and Astrophysics. 320: 196. Bibcode:1997A&A...320..196A.
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