Beta Piscis Austrini

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Beta Piscis Austrini
Diagram showing star positions and boundaries of the Piscis Austrinus constellation and its surroundings
Cercle rouge 100%.svg

Location of β Piscis Austrini (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Piscis Austrinus
Right ascension 22h 31m 30.29s
Declination −32° 20' 45.7"
Apparent magnitude (V) +4.29
Distance 148 ly
(45 pc)
Spectral type A1V
Other designations
β  Piscis Austrini, β PsA, Beta PsA, 17  Piscis Austrini, CCDM J22315-3221A, CPD −32° 6506, FK5 1592, GC 31459, HD 213398, HIP 111188, HR 8576, IDS 22258-3252 A, PPM 302699, SAO 213883, WDS J22315-3221A

Beta Piscis Austrini (Beta PsA, β Piscis Austrini, β PsA) is a multiple star system in the constellation Piscis Austrinus, with an apparent magnitude of +4.29. The primary component is a white A-type subgiant. It is approximately 148 light years from Earth.

Beta Piscis Austrini is moving through the Galaxy at a speed of 14.4 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,900 and 28,300 light years from the center of the Galaxy.[1]

With Delta and Zeta it constituted Tien Kang ("heavenly rope") in China.[2][3]


  1. ^ Beta Piscis Austrini (HIP 111188)
  2. ^ Richard Hinckley Allen: Star Names — Their Lore and Meaning: Piscis Australis, the Southern Fish
  3. ^ Tien Kang was possibly derived from 天綱 (Tiān Gāng) meaning Materials for Making Tents. AEEA opinion is, δ Piscis Austrini marking itself and stand alone in this asterism. See (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 6 日.

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