- Eta Ceti
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η Ceti Observation data
Epoch J2000.0 Equinox J2000.0Constellation Cetus Right ascension 1h08m35.40s Declination −10°10'56.0" Apparent magnitude (V) +3.46 Distance 118 ly
(36 pc)Spectral type K1.5IIICN1Fe0.5 Other designations Deneb Algenubi, AlgenudiEta Ceti (η Cet, η Ceti) is a star in the constellation Cetus. It has the traditional name Deneb Algenubi or Algenudi. The name was from Arabic ذنب ألجنبي - ðánab al-janūbii, meaning the southern tail of the sea monster.
In the catalogue of stars in the Calendarium of Al Achsasi al Mouakket, this star was designated Aoul al Naamat (أول ألنعمة - awwil al naʽāmāt), which was translated into Latin as Prima Struthionum, meaning the first ostrich.[1] This star, along with θ Cet (Thanih al Naamat), τ Cet (Thalath Al Naamat), ζ Cet (Baten Kaitos) and υ Cet, were Al Naʽāmāt (ألنعمة), the Hen Ostriches.[2][3]
In Chinese, 天倉 (Tiān Cāng), meaning Square Celestial Granary, refers to an asterism consisting of η Ceti, ι Ceti, θ Ceti, ζ Ceti, τ Ceti and 57 Ceti.[4] Consequently, η Ceti itself is known as 天倉二 (Tiān Cāng èr, English: the Second Star of Square Celestial Granary.)[5]
Structure
It belongs to spectral class K1.5IIICN1Fe0.5 and has apparent magnitude +3.45. It is approximately 118 light years from Earth.
References
- ^ Knobel, E. B. (June 1895). "Al Achsasi Al Mouakket, on a catalogue of stars in the Calendarium of Mohammad Al Achsasi Al Mouakket". Monthly Notices of the Royal Astronomical Society 55: 429. Bibcode 1895MNRAS..55..429K.
- ^ Allen, R. H. (1963). Star Names: Their Lore and Meaning (Reprint ed.). New York: Dover Publications Inc. p. 162. ISBN 0486210790. http://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Cetus*.html. Retrieved 2010-12-12.
- ^ η Cet as Aoul al Naamat or Prima Struthionum (the first ostrich), θ Cet as Thanih al Naamat or Secunda Struthionum (the second ostrich), τ Cet as Thalath al Naamat or Tertia Struthionum (the third ostrich), and ζ Cet as Rabah al Naamat or Quarta Struthionum (the fourth ostrich). υ Cet should be Khamis al Naamat or Quinta Struthionum (the fifth ostrich) consistently, but Al Achsasi Al Mouakket designated the title the fifth ostrich to γ Gam with uncleared consideration.
- ^ (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 9789867332257.
- ^ (Chinese) 香港太空館 - 研究資源 - 亮星中英對照表, Hong Kong Space Museum. Accessed on line November 23, 2010.
Bayer - α (Menkar)
- β (Deneb Kaitos, Diphda)
- γ (Kaffaljidhma)
- δ
- ε
- ζ (Baten Kaitos)
- η
- θ
- ι
- κ1
- λ
- μ
- ν
- ο A (Mira)
- ο B (VZ Ceti)
- π
- ρ
- σ
- τ
- χ
Flamsteed - 1
- 2
- 3
- 6
- 7
- 8 (ι)
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16 (β, Deneb Kaitos, Diphda)
- 18
- 20
- 21
- 25
- 26
- 27
- 28
- 29
- 30
- 31 (η)
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45 (θ)
- 46
- 47
- 48
- 49
- 50
- 52 (τ)
- 53 (χ)
- 55 (ζ, Baten Kaitos)
- 57
- 58
- 61
- 62
- 63
- 64
- 66
- 67
- 68 A(ο A, Mira)
- 68 B(ο B, VZ Ceti)
- 69
- 70
- 71
- 72 (ρ)
- 75
- 76 (σ)
- 77
- 78 (ν)
- 79
- 80
- 81
- 82 (δ)
- 83 (ε)
- 84
- 86 (γ, Kaffaljidhma)
- 87 (μ)
- 89 (π)
- 91 (λ)
- 92 (α, Menkar)
- 93
- 94
- 95
- 96 (κ1)
- 25 Ari
Nearby - WISE 0254+0223
Categories:- Cetus constellation
- Bayer objects
- Stars with proper names
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