T Coronae Australis
{{Short description|Young star in the constellation Corona Australis}}
{{Starbox begin
| name = T Coronae Australis}}
{{Starbox image
| image = 250px
| caption = A visual band light curve for T Coronae Australis, adapted from Bellingham and Rossano (1980)
}}
{{Starbox observe
| epoch = J2000.0
| constell = Corona Australis
}}
{{Starbox character
| u-b =
| b-v =
| r-i =
| variable = Herbig Ae/Be star
}}
{{Starbox astrometry
| prop_mo_ra = {{val|5.3|4.7}}
| prop_mo_dec = {{val|-24.9|4.7}}
| parallax =
| p_error =
| parallax_footnote =
| dist_ly = 502.3
}}
{{Starbox relpos
| epoch = 2023{{snd}}2024
| primary = A
| component = B
| projsep = 23
| angdistmas = {{val|153.2|1.2}}
| posang = {{val|275.4|0.1}}
}}
{{Starbox detail
| component1 = A
| radius=
| temperature=
| metal_fe=
| gravity=
| rotational_velocity=
| age_gyr=
| component2 = B
}}
{{Starbox catalog
| names={{odlist|V=T CrA|2MASS=19015878-3657498}}{{cite simbad|title=T CrA|accessdate=2021-03-21}}
}}
{{Starbox reference
| Simbad=T+CrA
}}
{{Starbox end}}
T Coronae Australis (T CrA), is a binary star in the constellation Corona Australis. It is a member of the Corona Australis star-forming region, which is located about {{convert|154.0|pc|ly|lk=on|order=flip}} away. It is a Herbig Ae/Be star, still in the first stages of star formation, and is surrounded by a circumstellar disk seen edge-on.
Johann Friedrich Julius Schmidt discovered that it is a variable star, in 1876. It appeared with its variable star designation in Annie Jump Cannon's 1907 work Second Catalogue of Variable Stars.
{{As of|2024}}, the stars are separated by {{val|153|ul=mas}} along a position angle of 275°. Their observed physical separation is 23 astronomical units. The primary component is 1.7 times as massive as the Sun, while the secondary is 0.9 times as massive.