Tianjin (天津)

Authors: Lyu Haocheng

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Tianjin in Stellarium, across the Milky Way

Tiān Jīn (天津, Celestial Fork), a Chinese constellation consists of 9 stars, located in Cygnus. This constellation is regarded as the "fork or bridge of the Milky Way in the sky" because it spans across the Milky Way.

Concordance, Etymology, History

Identification of stars

Tianjin Star is quite prominent in the sky, corresponding to the 9 stars in the constellation Cygnus, without controversy.

Star Names or Orders(Traditional/Qing)	Ho PENG YOKE	Yi Shitong Based on catalogue in 18th century	Pan Nai based on Xinyixiangfayao Star Map	Pan Nai based on catalogues in Yuan dynasty	SUN X. & J. Kistemaker Han Dynasty	Boshun Yang before Tang dynasty	Boshun Yang Song Jingyou(1034)
1st	γ Cyg	γ Cyg	γ Cyg	γ Cyg	γ Cyg	γ Cyg	γ Cyg
2nd (Determinative)	δ Cyg	δ Cyg	δ Cyg	δ Cyg	δ Cyg	δ Cyg	δ Cyg
3rd	ο1 Cyg	30 Cyg	ο1 Cyg	ο1 Cyg	ο1 Cyg	ο1 Cyg	ο1 Cyg
4th	α Cyg	α Cyg	α Cyg	α Cyg	α Cyg	α Cyg	α Cyg
5th	ν Cyg	ν Cyg	ν Cyg	ν Cyg	ν Cyg	ν Cyg	ν Cyg
6th	τ Cyg	τ Cyg	τ Cyg	τ Cyg	τ Cyg	τ Cyg	τ Cyg
7th	υ Cyg	υ Cyg	υ Cyg	υ Cyg	υ Cyg	υ Cyg	υ Cyg
8th	ζ Cyg	ζ Cyg	ζ Cyg	ζ Cyg	ζ Cyg	ζ Cyg	ζ Cyg
9th	ε Cyg	ε Cyg	ε Cyg	ε Cyg	ε Cyg	ε Cyg	ε Cyg

Maps (Gallery)

• Tianjin
• 
  Tianjin on Cheonsang Yeolcha Bunyajido
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  Tianjin on Suzhou Star Map
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  Tianjin on Yixiang Kaocheng star map (18th century)

IAU Working Group on Star Names

In 202x, the name of the historical constellation "xxx" was suggested to be used for one of the stars in this constellation. ...

Decision: ...

References

References (Chinese)