Mu Velorum
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Vela |
| Right ascension | 10h 46m 46.17877s |
| Declination | −49° 25′ 12.9244″ |
| Apparent magnitude (V) | 2.69 (2.7 + 6.4) |
| Characteristics | |
| A | |
| Evolutionary stage | Giant star |
| Spectral type | G5III |
| U−B color index | +0.57 |
| B−V color index | +0.90 |
| B | |
| Spectral type | F4/5V |
| Astrometry | |
| Radial velocity (Rv) | +6.2 km/s |
| Proper motion (μ) | RA: +63.22 mas/yr Dec.: −54.21 mas/yr |
| Parallax (π) | 27.84±0.38 mas |
| Distance | 117 ± 2 ly (35.9 ± 0.5 pc) |
| Absolute magnitude (MV) | −0.06 |
| Orbit | |
| Period (P) | 138±5 yr |
| Semi-major axis (a) | 1.40″±0.17″ (50.3 AU) |
| Eccentricity (e) | 0.938±0.016 |
| Inclination (i) | 42±10° |
| Longitude of the node (Ω) | 101±16° |
| Periastron epoch (T) | 1948.4±1.4 |
| Argument of periastron (ω) (secondary) | 127±18° |
| Details | |
| μ Vel A | |
| Mass | 3.30 M☉ |
| Radius | 13 R☉ |
| Luminosity | 107 L☉ |
| Surface gravity (log g) | 2.75 cgs |
| Temperature | 5,047 K |
| Rotational velocity (v sin i) | 6.4 km/s |
| Age | 360 Myr |
| μ Vel B | |
| Mass | ~1.5 M☉ |
| Other designations | |
| CD−48°5913, HD 93497, HIP 52727, HR 4216, SAO 222321 | |
| Database references | |
| SIMBAD | data |
Mu Velorum (μ Vel, μ Velorum) is a binary star system in the southern constellation Vela. The pair have a combined apparent visual magnitude of 2.69, making the system readily visible to the naked eye. From parallax measurements, the distance to this system is measured at 117 light-years (36 parsecs).