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.[1]

TY Coronae Australis
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
Spectral type B9e
Proper motion (μ) RA: −0.2 ± 1.3 mas/yr
Dec.: −28.6 ± 1.2 mas/yr
Other designations
TY CrA, SAO 210829, CD−37° 13024
Database references


  1. ^ 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.