![]() The position of Acrux. |
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Observation data Epoch J2000 Equinox J2000 |
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Constellation | Crux |
Right ascension | 12 |
Declination | -63° 05′ 56.7343″ |
Apparent magnitude (V) | 0.77 |
Characteristics | |
Spectral type | B0.5IV + B1V |
Astrometry | |
Radial velocity (Rv) | –11.2 / -0.6 km/s |
Proper motion (μ) | RA: -35.83 mas/yr |
Parallax (π) | 10.13 ± 0.50mas |
Distance | 320 ± 20 ly (99 ± 5 pc) |
Absolute magnitude (MV) | -4.14 |
Details | |
Mass | 14 / 10 M☉ |
Luminosity | 25,000 L☉ |
Temperature | 28,000 K |
Rotational velocity (v sin i) | 124 km/s |
Orbit | |
Companion | α Crucis Ab |
Period (P) | 0.208 yr |
Semimajor axis (a) | 1.0 AU" |
Eccentricity (e) | 0.0 |
Inclination (i) | 0.0° |
Database references | |
SIMBAD | data |