| 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 |
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]
- ^ Cite error: The named reference
MASTwas invoked but never defined (see the help page). - ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
- ^ a b c Maíz-Apellániz, Jesús; Walborn, Nolan R.; Galué, Héctor Á.; Wei, Lisa H. (2004). "A Galactic O Star Catalog". The Astrophysical Journal Supplement Series. 151 (1): 103–148. arXiv:astro-ph/0311196. Bibcode:2004ApJS..151..103M. doi:10.1086/381380. S2CID 118813863.
- ^ a b c Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
- ^ a b c Cite error: The named reference
penny08was invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
terrell03was invoked but never defined (see the help page). - ^ a b c Palate, M.; Rauw, G. (2012). "Spectral modelling of circular massive binary systems. Towards an understanding of the Struve-Sahade effect?". Astronomy & Astrophysics. 537: A119. arXiv:1109.1103. Bibcode:2012A&A...537A.119P. doi:10.1051/0004-6361/201117520. S2CID 84840295.