Epsilon Centauri
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Observation data Epoch J2000 |
|
---|---|
Constellation (pronunciation) |
Centaurus |
Right ascension | 13h39m53.2s |
Declination | −53°27′59″ |
Apparent magnitude (V) | +2.29 |
Characteristics | |
Spectral type | B1III |
U-B color index | −0.92 |
B-V color index | −0.22 |
Variable type | Beta Cephei |
Astrometry | |
Radial velocity (Rv) | +3 km/s |
Proper motion (μ) | RA: −14.60 mas/yr Dec.: −12.79 mas/yr |
Parallax (π) | 8.68 ± 0.77 mas |
Distance | 380 ± 30 ly (120 ± 10 pc) |
Absolute magnitude (MV) | −3.02 |
Other designations | |
Database references | |
SIMBAD | data |
Epsilon Centauri (ε Cen / ε Centauri) is a star in the constellation Centaurus.
ε Centauri is a blue-white B-type giant with a mean apparent magnitude of +2.29. It is classified as a Beta Cephei type variable star and its brightness varies from magnitude +2.29 to +2.31 with a period of 4.07 hours. It is sometimes given the proper name of Birdun or Al Birdhaun (البرﺬﻮﻦ), which means "the Packhorse" in Arabic.