Zeta2 Muscae
Star in the constellation Musca
From Wikipedia, the free encyclopedia
Zeta2 Muscae, Latinized from ζ2 Muscae, is a star[10] 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.[9] 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.[11] It is part of a triple star system with faint companions at 0.5 and 32.4 arc seconds distance.[12] The former is an infrared source,[13] the latter has a visual magnitude of 10.7.[4]
Right ascension12h 22m 07.34002s[1]
Declination−67° 31′ 19.5871″[1]
Apparentmagnitude(V)5.14[2] + 8.71[3] + 10.7[4]
 | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Musca |
| Right ascension | 12h 22m 07.34002s[1] |
| Declination | −67° 31′ 19.5871″[1] |
| Apparent magnitude (V) | 5.14[2] + 8.71[3] + 10.7[4] |
| Characteristics | |
| Spectral type | A5 V[5] + G8-K0V[3] |
| U−B color index | +0.13[2] |
| B−V color index | +0.19[2] |
| Astrometry | |
| Radial velocity (Rv) | −17.0[6] km/s |
| Proper motion (μ) | RA: −30.50[1] mas/yr Dec.: -6.10[1] mas/yr |
| Parallax (π) | 9.89±0.34 mas[1] |
| Distance | 330 ± 10 ly (101 ± 3 pc) |
| Absolute magnitude (MV) | +0.13[7] |
| Details | |
| ζ2 Muscae A | |
| Luminosity | 66.7[8] L☉ |
| Temperature | 7,400[8] K |
| Other designations | |
| CPD−66°1747, FK5 2990, HD 107566, HIP 60320, HR 4703, SAO 251866.[9] | |
| Database references | |
| SIMBAD | data |
