Lambda Muscae
Lambda Muscae, Latinized from λ Muscae, and often catalogued HD 102249 or HIP 57363, is 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 a star in a dual system according to studies, and one of the stars catalogued in astronomer Johann Bayer's 1603 publications Uranometria. Lambda Muscae more recently has been recorded as having a stellar classification of A7III. Thus, Lambda Muscae has a white tint and burns significantly hotter than the Sun.
| 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 |
| 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 | |
| Mass | 1.88 M☉ |
| Luminosity | 40 L☉ |
| Surface gravity (log g) | 3.87 cgs |
| Temperature | 8,164±278 K |
| Rotational velocity (v sin i) | 57.7±1.7 km/s |
| Age | 740 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.