Mu Cen
HIP 67472; Mu Cen
Star
Cen
Visible
Level 1
Naked eye / Binoculars
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
Cen
HR
5193
HIP
67472
Bayer
Mu
Variable ID
Mu Cen
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Visibility
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Light Curve
Multiple Star System
Separation
45.5″
Companion Mag
13.0
Position Angle
127°
Star Colors
A: Blue
Discoverer
HDO 226
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Fusion
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.
Survey Image
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