| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Lupus |
| Right ascension | 15h 18m 32.02296s[1] |
| Declination | −47° 52′ 30.9957″[1] |
| Apparent magnitude (V) | 4.29[2] |
| Characteristics | |
| Spectral type | B8 Ve[3] |
| U−B color index | −0.41[2] |
| B−V color index | −0.03[2] |
| Astrometry | |
| Radial velocity (Rv) | +14.90±1.78[4] km/s |
| Proper motion (μ) | RA: −29.59[1] mas/yr Dec.: −35.07[1] mas/yr |
| Parallax (π) | 9.72 ± 0.71 mas[1] |
| Distance | 340 ± 20 ly (103 ± 8 pc) |
| Absolute magnitude (MV) | −0.57[5] |
| Details[3] | |
| Mass | 4.42±0.20 M☉ |
| Luminosity | 603 L☉ |
| Surface gravity (log g) | 3.80±0.10 cgs |
| Temperature | 13,470±500 K |
| Rotational velocity (v sin i) | 280±20 km/s |
| Age | 112 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Mu Lupi (μ Lup) is a system of three or four[7] stars in the southern constellation of Lupus. It is visible to the naked eye with an apparent visual magnitude of 4.29[2] and lies roughly 340 light-years from the Sun.
Two of the components of this system, A and B, form a pair with an angular separation of 1.1 arcseconds. As of 2014, no orbit has been published. Component C lies at an angular separation of 22.6 arcseconds from the AB pair, and may be a common proper motion companion. It is an A-type main-sequence star with a classification of A2 V. A fourth component at an angular separation of 6.15 arcseconds from component A, may be a brown dwarf.[7]
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