Nu3 Canis Majoris

Nu3 Canis Majoris
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Canis Major
Right ascension 06h 37m 53.42144s
Declination −18° 14 14.9218
Apparent magnitude (V) 4.41 (4.63 + 8.56)
Characteristics
Evolutionary stage horizontal branch
Spectral type K0 II-III
U−B color index +1.04
B−V color index +1.16
Astrometry
Radial velocity (Rv)−1.50±0.70 km/s
Proper motion (μ) RA: −7.32 mas/yr
Dec.: −8.72 mas/yr
Parallax (π)7.74±0.43 mas
Distance420 ± 20 ly
(129 ± 7 pc)
Absolute magnitude (MV)−1.13
Details
ν3 CMa A
Mass3.38±0.37 M
Radius32.7 R
Luminosity398 L
Surface gravity (log g)2.34 cgs
Temperature4,510 K
Metallicity [Fe/H]−0.24 dex
Rotation183 d
Rotational velocity (v sin i)8 km/s
Age380±20 Myr
Other designations
ν3 CMa, 8 Canis Majoris, BD−18°1492, GC 8660, HD 47442, HIP 31700, HR 2443, SAO 151730, CCDM 06379-1814
Database references
SIMBADdata

Nu3 Canis Majoris, Latinized from ν3 Canis Majoris, is a binary star system in the southern constellation of Canis Major.