Epsilon Trianguli Australis

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ε Trianguli Australis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Triangulum Australe
Right ascension 15h 36m 43.2s
Declination −66° 19' 01"
Apparent magnitude (V) +4.11
Distance 216.1 ± 8.90 ly
(66.27 ± 2.73 pc)
Spectral type K1–2III / A5
Other designations
HR 5771, HD 138538, CP−65 3102, FK5 574, HIP 76440, SAO 253226, GC 20932, CCDM 15367-6620

Epsilon Trianguli Australis (ε TrA, ε Trianguli Australis) is a wide double star in the southern constellation Triangulum Australe. It is approximately 216 light years from Earth.

The primary component, Epsilon Trianguli Australis A, is an orange K-type sub-giant with an apparent magnitude of +4.11V.[1] The companion, Epsilon Trianguli Australis B, is a white A-type main sequence dwarf which has an apparent magnitude of +9.32v,[2] and is separated from the primary by 82.1 arcseconds in position angle 218° (2001).


  1. ^ "Epsilon Trianguli Australis". SIMBAD. Retrieved 7 June 2012. 
  2. ^ "HD 138510". SIMBAD. Retrieved 7 June 2012.