6 Cassiopeiae

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Star
6 Cassiopeiae
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Cassiopeia
Right ascension 23 h 48 m 50.17 s
declination + 62 ° 12 ′ 52.3 ″
Apparent brightness 5.55 mag
Typing
B − V color index +0.67 
U − B color index −0.02 
Spectral class A3 Ia + e
Astrometry
Radial velocity −55.7 km / s
distance approx. 8200  ly
approx. 2500  pc
Visual absolute brightness M vis −8.3 mag
Proper movement 
Rec. Share: (−3.57 ± 0.35)  mas / a
Dec. portion: (−1.57 ± 0.33)  mas / a
Physical Properties
Dimensions ~ 25  M ☉
radius ~ 190  R ☉
Luminosity

~ 195,000  L ☉

Effective temperature approx. 8800  K
Rotation time 82 d
Other names
and catalog entries
Flamsteed name 6 Cassiopeiae
Bonn survey BD + 61 ° 2533
Bright Star Catalog HR 9018 [1]
Henry Draper Catalog HD 223385 [2]
Hipparcos catalog HIP 117447 [3]
SAO catalog SAO 20869 [4]
Tycho catalog TYC 4285-3744-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
Other names V566 Cassiopeiae

6 Cassiopeiae is a quadruple star system approximately 8,200 light years away and located in the constellation Cassiopeia .

6 Cas A is a white supergiant of the spectral class A. After Rho Cassiopeiae , 6 Cas A is the most luminous star of the stellar association Cas OB5 , which can be found in the constellation Cassiopeia in the northern hemisphere.

6 Cas A is probably at least 25 times as heavy as the sun. Its apparent brightness is +5.43 mag, so it is faintly perceptible to the naked eye under good conditions. With an absolute visual magnitude of –8.3 mag, it is one of the brightest stars at all. Compared to the sun , it is 195,000 times brighter.

At the moment 6 Cassiopeiae is developing into a red supergiant like Deneb .

Little is known about the three small components.

Web links

Individual evidence

  1. ↑ a b Hipparcos catalog
  2. ↑ a b c SIMBAD database
  3. ↑ a b Bright Star Catalog