- Theta Cassiopeiae
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θ Cassiopeiae Observation data
Epoch J2000.0 Equinox J2000.0Constellation Cassiopeia Right ascension 01h11m06.2s Declination +55°08′59″ Apparent magnitude (V) +4.34 Distance 137 ± 4 ly
(42 ± 1 pc)Spectral type A7V Other designations 
The Bayer-designated stars in Cassiopeia. Theta Cassiopeiae is circled.
Theta Cassiopeiae (θ Cas, θ Cassiopeiae) is a star in the constellation Cassiopeia. It has the traditional name Marfark or Marfak, which it shares with μ Cassiopeiae, and the name was from Al Marfik or Al Mirfaq (المرفق), meaning "the elbow".[1]
In Chinese, 閣道 (Gé Dào), meaning Flying Corridor, refers to an asterism consisting of θ Cassiopeiae, ι Cassiopeiae, ε Cassiopeiae, δ Cassiopeiae, ν Cassiopeiae and ο Cassiopeiae.[2] Consequently, θ Cassiopeiae itself is known as 閣道四 (Gé Dào sì, English: the Fourth Star of Flying Corridor.)[3]
θ Cassiopeiae is a white A-type main sequence dwarf with an apparent magnitude of +4.34. It is approximately 137 light years from Earth.
References
- ^ Allen, R. H. (1963). Star Names: Their Lore and Meaning (Reprint ed.). New York: Dover Publications Inc. p. 148. ISBN 0486210790. http://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Cassiopeia*.html. Retrieved 2010-12-12.
- ^ (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) 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 Flamsteed 1 • 2 • 4 • 5 (τ) • 6 • 7 (ρ) • 8 (σ) • 9 • 10 • 11 (β, Caph) • 12 • 13 • 14 (λ) • 15 (κ) • 16 • 17 (ζ) • 18 (α, Schedar) • 19 (ξ) • 20 (π) • 21 • 22 (ο) • 23 • 24 (η, Achird) • 25 (ν) • 26 (υ1) • 27 (γ, Tsih) • 28 (υ2) • 30 (μ) • 31 • 32 • 33 (θ) • 34 (φ) • 35 • 36 (ψ) • 37 (δ, Ruchbah) • 38 • 39 (χ) • 40 • 42 • 43 • 44 • 45 (ε, Segin) • 46 (ω) • 47 • 48 (A) • 49 • 50 • 51 • 52 • 53 • 54 • 55Categories:- Cassiopeia constellation
- Bayer objects
- A-type main sequence stars
- Stars with proper names
- Main sequence star stubs
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