HD 121228
Star in the constellation Centaurus / From Wikipedia, the free encyclopedia
HD 121228 is a blue supergiant star located in the constellation Centaurus. The star is noted for its close visual proximity to the planetary nebula SuWt 2.[9]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
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Constellation | Centaurus |
Right ascension | 13h 55m 52.322s[1] |
Declination | −59° 22′ 16.45″[1] |
Apparent magnitude (V) | 7.86[2] |
Characteristics | |
Spectral type | B1 Ib[3] |
Apparent magnitude (U) | 7.34 |
Apparent magnitude (B) | 8.00 |
Apparent magnitude (V) | 7.86 |
Apparent magnitude (R) | 8.88 |
Apparent magnitude (G) | 7.7591 |
Apparent magnitude (J) | 7.428 |
Apparent magnitude (H) | 7.426 |
Apparent magnitude (K) | 7.385 |
Astrometry | |
Proper motion (μ) | RA: −3.376[1] mas/yr Dec.: −1.300[1] mas/yr |
Parallax (π) | 0.5846 ± 0.0260 mas[1] |
Distance | 5,600 ± 200 ly (1,710 ± 80 pc) |
Absolute magnitude (MV) | −5.32[4] |
Details | |
Mass | 7.0[5] M☉ |
Radius | 19.6[6] R☉ |
Luminosity | 4,124[7] L☉ |
Surface gravity (log g) | 2.14[7] cgs |
Temperature | 26,424[8] K |
Age | 31.6[5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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