TU Muscae
Star in the constellation Musca / From Wikipedia, the free encyclopedia
TU Muscae, also known as HD100213, is an eclipsing binary star in the constellation Musca. Its apparent magnitude ranges from 8.17 to 8.75 over around 1.4 days.[4]
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Musca |
Right ascension | 11h 31m 10.92470s[2] |
Declination | −65° 44′ 32.1019″[2] |
Apparent magnitude (V) | 8.307[3](8.17 - 8.75[4]) |
Characteristics | |
Spectral type | O7V + O8V[5] |
U−B color index | −0.860[3] |
B−V color index | +0.047[3] |
Variable type | β Lyr[4] |
Astrometry | |
Radial velocity (Rv) | −4[6] km/s |
Proper motion (μ) | RA: −6.62[2] mas/yr Dec.: −1.21[2] mas/yr |
Parallax (π) | 0.02 ± 0.76 mas[2] |
Orbit[5] | |
Period (P) | 1.387 days |
Semi-major axis (a) | 17.34 R☉[7] |
Eccentricity (e) | 0 |
Inclination (i) | 77.7° |
Longitude of the node (Ω) | 3.137[6]° |
Semi-amplitude (K1) (primary) | 214.5 km/s |
Semi-amplitude (K2) (secondary) | 345.8 km/s |
Details[5] | |
Primary | |
Mass | 16.8 M☉ |
Radius | 7.2 R☉ |
Luminosity | 105,000 L☉ |
Surface gravity (log g) | 4.05[7] cgs |
Temperature | 35,000[6] K |
secondary | |
Mass | 10.5 M☉ |
Radius | 5.7 R☉ |
Luminosity | 35,000 L☉ |
Surface gravity (log g) | 4.04[7] cgs |
Temperature | 31,366[6] K |
Other designations | |
Database references | |
SIMBAD | data |
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