Epsilon Piscis Austrini

Epsilon Piscis Austrini

Location of ε Piscis Austrini (circled)

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Piscis Austrinus
Right ascension	22^h 40^m 39.33^s
Declination	−27° 02' 37.0"
Apparent magnitude (V)	+4.18
Distance	744 ly (228 pc)
Spectral type	B8V
Other designations
ε  Piscis Austrini, ε PsA, Epsilon PsA, 18 Piscis Austrini, CPD −27° 7442, FK5 854, GC 31646, HD 214748, HIP 111954, HR 8628, PPM 274114, SAO 191318.

Epsilon Piscis Austrini (Epsilon PsA, ε Piscis Austrini, ε PsA) is a blue B-type main sequence star with an apparent magnitude of +4.18. It is approximately 744 light years from Earth.

Epsilon Piscis Austrini is moving through the Galaxy at a speed of 18.7 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,900 and 28,100 light years from the center of the Galaxy.^[1]

Naming

In Chinese, 羽林軍 (Yǔ Lín Jūn), meaning Palace Guard, refers to an asterism consisting of ε Piscis Austrini, 29 Aquarii, 35 Aquarii, 41 Aquarii, 47 Aquarii, 49 Aquarii, λ Piscis Austrini, HD 212448, 21 Piscis Austrini, 20 Piscis Austrini, υ Aquarii, 68 Aquarii, 66 Aquarii, 61 Aquarii, 53 Aquarii, 50 Aquarii, 56 Aquarii, 45 Aquarii, 58 Aquarii, 64 Aquarii, 65 Aquarii, 70 Aquarii, 74 Aquarii, τ² Aquarii, τ¹ Aquarii, δ Aquarii, 77 Aquarii, 88 Aquarii, 89 Aquarii, 86 Aquarii, 101 Aquarii, 100 Aquarii, 99 Aquarii, 98 Aquarii, 97 Aquarii, 94 Aquarii, ψ³Aquarii, ψ²Aquarii, ψ¹Aquarii, 87 Aquarii, 85 Aquarii, 83 Aquarii, χ Aquarii, ω¹ Aquarii and ω² Aquarii. Consequently, ε Piscis Austrini itself is known as 羽林軍八 (Yǔ Lín Jūn bā, English: the Eighth Sixth Star of Palace Guard.)^[2]

References

1. Epsilon Piscis Austrini (HIP 111954)
2. (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 7 日