Acrux AB

The position of Acrux.
Observation data
Epoch J2000      Equinox J2000
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

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Acrux, which is released under the Creative Commons Attribution-Share-Alike License 3.0