- Pi Capricorni
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π Capricorni Observation data
Epoch J2000.0 Equinox J2000.0Constellation Capricornus Right ascension 20h27m19.2s Declination −18°12′42″ Apparent magnitude (V) +5.08 Distance 670 ± 110 ly
(204 ± 33 pc)Spectral type B8II-III Other designations Pi Capricorni (π Cap, π Capricorni) is a double star in the constellation Capricornus. It also has the traditional star name Okul or Oculus (meaning eye in Latin)[1]. It is approximately 670 light years from Earth.
In Chinese, 牛宿 (Niú Su), meaning Ox (asterism), refers to an asterism consisting of π Capricorni, β Capricorni, α2 Capricorni, ξ2 Capricorni, ο Capricorni and ρ Capricorni.[2] Consequently, π Capricorni itself is known as 牛宿四 (Niú Su sì, English: the Fourth Star of Ox.)[3]
The primary component, π Capricorni A, is a blue-white B-type bright giant with an apparent magnitude of +5.08. It is a spectroscopic binary[citation needed] whose two components are separated by 0.1 arcseconds. The third component, π Capricorni B, is an eighth magnitude star 3.4 arcseconds from the primary.
References
- ^ http://www.constellationsofwords.com/stars/Oculus.html
- ^ (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.
- ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 13 日
Bayer Flamsteed 1 (ξ1) • 2 (ξ2) • 3 • 4 • 5 (α¹, Prima Giedi) • 6 (α², Secunda Giedi) • 7(σ) • 8 (ν, Alshat) • 11 (ρ) • 15 (υ) • 16 (ψ) • 17 • 18 (ω) • 19 • 20 • 21 • 22 (η) • 23 (θ) • 24 (A) • 25 (χ) • 26 • 27 • 28 (φ) • 29 • 30 • 31 • 32(ι) • 33 • 34 (ζ) • 35 • 36 (b) • 37 • 38 • 39 (ε) • 40 (γ, Nashira) • 41 • 42 • 43 (κ) • 44 • 45 • 46 (c) • 47 • 48 (λ) • 49 (δ, Deneb Algedi) • 50 • 51 (μ)List Categories:- Bayer objects
- B-type bright giants
- Capricornus constellation
- Spectroscopic binaries
- Triple star systems
- Stars with proper names
- Multiple star stubs
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