AO Cassiopeiae

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AO Cas A/B

Observation data
Epoch J2000
Constellation
(pronunciation)		 Cassiopeia
Right ascension 00h 17m 43.0617s
Declination +51° 25' 59.125"'
Apparent magnitude (V) 6.102
Characteristics
Spectral type O9III
U-B color index ?
B-V color index ?
Variable type Eclipsing binary of beta Lyr
Astrometry
Radial velocity (Rv) -35.2 km/s
Proper motion (μ) RA: -4.19 mas/yr
Dec.: -1.62 mas/yr
Parallax (π) 0.57 ± 0.69 mas
Distance approx. 6000 ly
(approx. 2000 pc)
Absolute magnitude (MV) 5.955
Details
Mass 32 / 30 M☉
Radius 11.5 / 7.5 R☉
Luminosity ? L☉
Temperature ? K
Metallicity ?
Rotation ?
Age ? years
Other designations
V* AO Cas, HR 65, TD1 133, AG+51° 29, GOS G117.59-11.09 01, 2MASS J00174306+5125591, TYC 3259-394-1, [[ BD]]+50 46A, Goy 5, MCW 6, CGO 11, GSC 03259-00394, PPM 25200, CSI+50° 46 2, HD 1337, ROT 3487, SAO 21273, GC 345, HIC 1415, SBC7 10, HIP 1415.
Database references
SIMBAD data

AO Cassiopeiae or AO Cas, One of the biggest known double systems is known as well as Pearce's Star.

[edit] Reference


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