Mu Cen
Physical Properties
Magnitude
3.04
Range
2.85 - 3.55
Period
8.2 hours
Variable Type
Gamma Cassiopeiae (Eruptive Be Star)
Spectral Type
B2Vnep
Star Color
Blue
(B-V -0.17)
Distance
505 ly
Position & Identifiers
RA
13h 49m 37.0s
Dec
-42° 28' 26.0"
Constellation
Centaurus
(Cen)
HR
5193
HIP
67472
Bayer
Mu
Variable ID
Mu Cen
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Stellar Notes
Gamma Cas 2.92 - 3.43V, 3.535d. Variable H alpha. Expanding circumstellar shell. R and I mags. decreased by about | 0.3m between 1965 and 1983. Variable line profiles.
Companion F2V, optical.
Sco-Cen cluster; upper Cen group of Sco-Cen assoc.
Shell star. Line profiles of MgII 4481 change in period 0.505d, about five times the period of weaker absorption | features.
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