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.^[4]

TY Coronae Australis

The y band (near infrared) light curve for TY Coronae Australis, adapted from Vaz et al. (1998)[1]
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Corona Australis
Right ascension	19h 01m 40.83122s[2]
Declination	−36° 52′ 33.8018″[2]
Apparent magnitude (V)	9.39[3]
Characteristics
Spectral type	B9e
Astrometry
Proper motion (μ)	RA: −2.147 ± 0.239[2] mas/yr Dec.: −32.723 ± 0.226[2] mas/yr
Parallax (π)	7.3290±0.1456 mas[2]
Distance	445 ± 9 ly (136 ± 3 pc)
Other designations
TY CrA, SAO 210829, CD−37° 13024
Database references
SIMBAD	data

Robert T. A. Innes announced his discovery that the star is a variable star, in 1916.^[5]