TY Coronae Australis
TY Coronae Australis (abbreviated as TY CrA), is a young star system around 3 million years old in the constellation Corona Australis. It is composed of a blue-white B-class star around triple the Sun's mass and a cooler smaller companion around half its mass (or 1.6 times that of the Sun). The system is an eclipsing binary with a period of 2.8 days.[2]
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Corona Australis |
| Right ascension | 19h 01m 40.8299s |
| Declination | −36° 52′ 33.880″ |
| Apparent magnitude (V) | 9.39 |
| Characteristics | |
| Spectral type | B9e |
| Astrometry | |
| Proper motion (μ) | RA: −0.2 ± 1.3 mas/yr Dec.: −28.6 ± 1.2 mas/yr |
| Details | |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
- Vaz, L. P. R.; Andersen, J.; Casey, B. W.; Clausen, J. V.; Mathieu, R. D.; Heyer, I. (June 1998). "Four-colour photometry of eclipsing binaries XXXIX. Light curves of the pre–main sequence triple system TY Coronae Australis?". Astronomy and Astrophysics Supplement Series. 130: 245–250. doi:10.1051/aas:1998224.
- Casey, Brian W.; Mathieu, Robert D.; Vaz, Luiz Paulo R.; Andersen, Johannes; Suntzeff, Nicholas B. (1998). "The Pre-Main-Sequence Eclipsing Binary TY Coronae Australis: Precise Stellar Dimensions and Tests of Evolutionary Models". The Astronomical Journal. 115 (4): 1617–1633. Bibcode:1998AJ....115.1617C. doi:10.1086/300270.
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