V509 Cassiopeiae

V509 Cassiopeiae
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**V509 Cassiopeiae**
Observation data Epoch J2000.0 Equinox J2000.0
V509 Cassiopeiae
Constellation	Cassiopeia
Right ascension	23^h00^m05.1^s
Declination	+56°56′43″
Apparent magnitude (V)	+5.10
Characteristics
Spectral type	F80
U-B color index	+1.16
B-V color index	+1.42
Variable type	semiregular
Astrometry
Radial velocity (R_v)	−58 km/s
Proper motion (μ)	RA: −2.94 mas/yr Dec.: −3.09 mas/yr
Parallax (π)	-0.15 ± 0.57 mas
Distance	>7800 ly (>2400 pc)
Absolute magnitude (M_V)	−6.77
Details

Mass	25 M_☉
Radius	200 R_☉
Luminosity	350.000 L_☉
Temperature	? K
Metallicity	?
Rotation	?
Age	? years

Other designations
HR 8752, HD 217476, FK5 3839, HIP 113561, SAO 35039
Database references
SIMBAD	data

V509 Cassiopeiae (V509 Cas) is a star in the constellation Cassiopeia.

V509 Cassiopeiae is a yellow-white F-type hypergiant with a mean apparent magnitude of +5.10. It is at least 7800 light years from Earth. It is classified as a semiregular variable star and its brightness varies from magnitude +4.75 to +5.5.

See also