Zeta2 Muscae
Zeta2 Muscae, Latinized from ζ2 Muscae, is a star in the southern constellation of Musca. Its apparent magnitude is 5.16. This is a white main sequence star of spectral type A5V around 330 light-years distant from Earth. Like several other stars in the constellation, it is a member of the Lower Centaurus–Crux subgroup of the Scorpius–Centaurus association, a group of predominantly hot blue-white stars that share a common origin and proper motion across the galaxy. It is part of a triple star system with faint companions at 0.5 and 32.4 arc seconds distance. The former is an infrared source, the latter has a visual magnitude of 10.7.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Musca |
| Right ascension | 12h 22m 07.34002s |
| Declination | −67° 31′ 19.5871″ |
| Apparent magnitude (V) | 5.14 + 8.71 + 10.7 |
| Characteristics | |
| Spectral type | A5 V + G8-K0V |
| U−B color index | +0.13 |
| B−V color index | +0.19 |
| Astrometry | |
| Radial velocity (Rv) | −17.0 km/s |
| Proper motion (μ) | RA: −30.50 mas/yr Dec.: -6.10 mas/yr |
| Parallax (π) | 9.89 ± 0.34 mas |
| Distance | 330 ± 10 ly (101 ± 3 pc) |
| Absolute magnitude (MV) | +0.13 |
| Details | |
| ζ2 Muscae A | |
| Luminosity | 66.7 L☉ |
| Temperature | 7,400 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
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