Observation data
Epoch J2000      Equinox J2000
Constellation Orion
Right ascension 05h 35m 08.27761s[1]
Declination +09° 56′ 02.9611″[1]
Apparent magnitude (V) 3.54 / 5.61[2]
Characteristics
Spectral type O8 III + B0.5 V[2]
U−B color index –1.01 / –0.77[2]
B−V color index –0.21 / +0.04[2]
Astrometry
Radial velocity (Rv) +33.5 km/s
Proper motion (μ) RA: –0.34[1] mas/yr
Dec.: –2.94[1] mas/yr
Parallax (π) 2.97 ± 0.55[1] mas
Distance approx. 1,100 ly
(approx. 340 pc)
Absolute magnitude (MV) –4.25 / -1.94
Details
Meissa A
Mass 27.9 ± 3.3[3] M
Radius 10.0[4] R
Surface gravity (log g) 4.0[4] cgs
Temperature 35,046 ± 454[4] K
Age 3.0 ± 0.8[3] Myr
Other designations
λ Orionis39 Orionis, 101 G. Orionis, BD+09 879,HIP 26207, HR 1879, SAO 112921.
A: HD 36861, HR 1879.
B: HD 36862, HR 1880.
Database references
SIMBAD data