Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lepus |
Right ascension | 05h 01m 25.58117s[1] |
Declination | −20° 03′ 06.9054″[1] |
Apparent magnitude (V) | 4.91[2] |
Characteristics | |
Evolutionary stage | main sequence[3] |
Spectral type | B9V[4] |
B−V color index | −0.047±0.002[2] |
Astrometry | |
Radial velocity (Rv) | +24.2±2.8[2] km/s |
Proper motion (μ) | RA: +36.377[1] mas/yr Dec.: −15.600[1] mas/yr |
Parallax (π) | 16.5337 ± 0.1691 mas[1] |
Distance | 197 ± 2 ly (60.5 ± 0.6 pc) |
Absolute magnitude (MV) | 1.00[2] |
Details | |
Mass | 2.56±0.02[3] or 3.24[5] M☉ |
Radius | 3.1[6] R☉ |
Luminosity | 46.5[2] L☉ |
Surface gravity (log g) | 4.27±0.14[5] cgs |
Temperature | 12,450±423[5] K |
Rotational velocity (v sin i) | 293[5] or 302[3] km/s |
Age | 124[5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 32309 is a single[8] star in the southern constellation of Lepus. It has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of 4.91.[2] The distance to this object is 197 light years based on parallax.[1] It is drifting further away from the Sun with a radial velocity of +24 km/s.[2] This is a member of the Columba association of co-moving stars.[9]
This is a B-type main-sequence star with a stellar classification of B9V.[4] It is around 124[5] million years old and is spinning rapidly with a projected rotational velocity of about 300 km/s.[5][3] Mass estimates range from 2.56[3] to 3.24[5] times the mass of the Sun and it has about 3.1[6] times the Sun's radius. The star is radiating 46.5[2] times the luminosity of the Sun from its photosphere at an effective temperature of 12,450 K.[5]