Iota Capricorni

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ι Capricorni
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Capricornus
Right ascension 21h22m14.8s
Declination −16°50′04″
Apparent magnitude (V) +4.28
Distance 216 ± 11 ly
(66 ± 3 pc)
Spectral type G7IIIFe-1.5
Other designations
32 Capricorni, HR 8167, HD 203387, BD−17°6245, FK5 1561, HIP 105515, SAO 164346.

Iota Capricorni (ι Cap, ι Capricorni) is a star in the constellation Capricornus.

ι Capricorni is a yellow G-type giant with a mean apparent magnitude of +4.28. It is approximately 216 light years from Earth. It is classified as a BY Draconis type variable star and its brightness varies by 0.06 magnitudes.

Chinese name[edit]

In Chinese, 十二國 (Shíer Guó), meaning Twelve States, refers to an asterism which represents twelve ancient states in the Spring and Autumn period and the Warring States period, consisting of ι Capricorni, φ Capricorni, 38 Capricorni, 35 Capricorni, 36 Capricorni, χ Capricorni, θ Capricorni, 30 Capricorni, 33 Capricorni, ζ Capricorni, 19 Capricorni, 26 Capricorni, 27 Capricorni, 20 Capricorni, η Capricorni and 21 Capricorni.[1] Consequently, ι Capricorni itself is known as 代一 (Dài yī, English: the First Star of Dai), meaning that this star (together with 37 Capricorni) represents the state Dai (or Tae)().[2][3]


  1. ^ (Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
  2. ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 4 日
  3. ^ Richard Hinckley Allen. "Star Names — Their Lore and Meaning: Capricornus".