Delta Piscis Austrini

Delta Piscis Austrini

Location of δ Piscis Austrini (circled)

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Piscis Austrinus
Right ascension	22^h 55^m 56.89^s
Declination	−32° 32' 22.9"
Apparent magnitude (V)	+4.20
Distance	170 ly (52 pc)
Spectral type	G8III
Other designations
δ  Piscis Austrini, δ PsA, Delta PsA, 23 Piscis Austrini, CCDM J22559-3232A , GC 31974, HD 216763, HIP 113246, HR 8720, IDS 22504-3304 A, PPM 303181, SAO 214189, WDS J22559-3232A

Delta Piscis Austrini (Delta PsA, δ Piscis Austrini, δ PsA) is multiple star system in constellation of Piscis Austrinus, with an apparent magnitude of +4.20. The primary component is a yellow G-type giant. It is approximately 170 light years from Earth.

Delta Piscis Austrini is moving through the Galaxy at a speed of 13.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,000 and 35,300 light years from the center of the Galaxy.^[1]

Delta Piscis Austrini will come closest to the Sun 2.8 million years from now when it will brighten to magnitude 2.87 from a distance of 83 light years.^[1]

Chinese name

The Chinese name for Delta Piscis Austrini is 天綱 (Tiān Gāng) meaning Materials for Making Tents, because this star is marking itself and stand alone in Materials for Making Tents asterism, Well mansion (see : Chinese constellation).^[2] 天綱 (Tiān Gāng) westernized into Tien Kang, meaning "the Heavenly Rope" in R.H. Allen's work, but the name is for the asterism consisting this star, β PsA and ζ PsA.^[3]

References

1. Delta Piscis Austrini (HIP 113246)
2. (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 6 日
3. Richard Hinckley Allen: Star Names — Their Lore and Meaning: Piscis Australis, the Southern Fish