Lambda Muscae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Musca |
| Right ascension | 11h 45m 36.41916s |
| Declination | −66° 43′ 43.5440″ |
| Apparent magnitude (V) | +3.63 |
| Characteristics | |
| Spectral type | A7 V |
| U−B color index | +0.14 |
| B−V color index | +0.16 |
| R−I color index | 0.08 |
| Variable type | δ Sct |
| Astrometry | |
| Radial velocity (Rv) | +15.0±0.3 km/s |
| Proper motion (μ) | RA: −100.35 mas/yr Dec.: +33.49 mas/yr |
| Parallax (π) | 25.65±0.34 mas |
| Distance | 127 ± 2 ly (39.0 ± 0.5 pc) |
| Absolute magnitude (MV) | +1.07 |
| Details | |
| Aa | |
| Mass | 2.28 M☉ |
| Radius | 3.7 R☉ |
| Luminosity | 40 L☉ |
| Surface gravity (log g) | 3.87 cgs |
| Temperature | 7,700 K |
| Rotational velocity (v sin i) | 57.7±1.7 km/s |
| Age | 700 Myr |
| Ab | |
| Mass | 0.43 M☉ |
| C | |
| Mass | 0.16 M☉ |
| Other designations | |
| λ Mus, CPD−66°1640, FK5 442, GC 16131, HD 102249, HIP 57363, HR 4520, SAO 251575, CCDM J11456-6644A | |
| Database references | |
| SIMBAD | data |
Lambda Muscae, Latinized from λ Muscae, and often catalogued HD 102249 or HIP 57363, is a triple star system and the fourth-brightest star in the Southern Hemisphere constellation of Musca (the Fly). Lambda Muscae visibly makes up the far end of the tail of the visual Musca constellation. It is one of the stars catalogued in astronomer Johann Bayer's 1603 publications Uranometria.