# Hydra in Chinese astronomy

The modern constellation Hydra lies across two of the quadrants, symbolized by the Azure Dragon of the East (東方青龍, Dōng Fāng Qīng Lóng) and the Vermilion Bird of the South (南方朱雀, Nán Fāng Zhū Què), that divide the sky in traditional Chinese uranography.
The name of the western constellation in modern Chinese is 長蛇座 (cháng shé zuò), which means "the long snake constellation".

## Stars

The map of Chinese constellation in constellation Hydra area consists of:
| Four Symbols | Mansion (Chinese name) | Romanization | Translation | Asterisms (Chinese name) | Romanization | Translation | Western star name | Chinese star name | Romanization | Translation |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 平 | Píng | Justice |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 平 | Píng | Justice | γ Hya |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 平 | Píng | Justice | γ Hya | 平一 | Píngyī | 1st star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 平 | Píng | Justice | γ Hya | 平西星 | Píngxīxīng | Western star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 平 | Píng | Justice | π Hya | 平二 | Píngèr | 2nd star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 折威 | Shéwēi | Executions |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 折威 | Shéwēi | Executions | 50 Hya | 折威一 | Shéwēiyī | 1st star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 折威 | Shéwēi | Executions | 51 Hya | 折威增二 | Shéwēizēngèr | 2nd additional star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 折威 | Shéwēi | Executions | 54 Hya | 折威增三 | Shéwēizēngsān | 3rd additional star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 折威 | Shéwēi | Executions | 55 Hya | 折威增四 | Shéwēizēngsì | 4th additional star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 折威 | Shéwēi | Executions | 56 Hya | 折威增五 | Shéwēizēngwǔ | 5th additional star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 折威 | Shéwēi | Executions | HD 131992 | 折威增六 | Shéwēizēngliù | 6th additional star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 折威 | Shéwēi | Executions | 57 Hya | 折威增七 | Shéwēizēngqī | 7th additional star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 陣車 | Zhènchē | Battle Chariots |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 陣車 | Zhènchē | Battle Chariots | 58 Hya | 陣車一 | Zhènchēyī | 1st star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 陣車 | Zhènchē | Battle Chariots | 60 Hya | 陣車二 | Zhènchēèr | 2nd star |
| Azure Dragon of the East (東方青龍) | 角 | Jiǎo | Horn | 陣車 | Zhènchē | Battle Chariots | 59 Hya | 陣車增二 | Zhènchēzēngèr | 2nd additional star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | 2 Hya | 外廚一 | Wàichúyī | 1st star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | F Hya | 外廚二 | Wàichúèr | 2nd star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | 14 Hya | 外廚三 | Wàichúsān | 3rd star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | 1 Hya | 外廚增二 | Wàichúzēngèr | 2nd additional star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | c Hya | 外廚增三 | Wàichúzēngsān | 3rd additional star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | 14 Hya | 外廚增四 | Wàichúzēngsì | 4th additional star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | 15 Hya | 外廚增六 | Wàichúzēngliù | 6th additional star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | 17 Hya | 外廚增七 | Wàichúzēngqī | 7th additional star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | 6 Hya | 外廚增八 | Wàichúzēngbā | 8th additional star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | 12 Hya | 外廚增九 | Wàichúzēngjiǔ | 9th additional star |
| Vermilion Bird of the South (南方朱雀) | 鬼 | Guǐ | Ghost | 外廚 | Wàichú | Outer Kitchen | 9 Hya | 外廚增十 | Wàichúzēngshí | 10th additional star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | δ Hya |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | δ Hya | 柳宿一 | Liǔsùyī | 1st star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | δ Hya | 柳宿距星 | Liǔsùjùxīng | Separated star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | δ Hya | 柳宿西头第三星 | Liǔsùxītóudìsānxīng | 3rd star in the west of three stars of Three Stars |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | δ Hya | 玉井西北星 | Yùjǐngxīběixīng | Star in the southwest of Jade Well constellation |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | δ Hya | 午 | Wǔ | |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | δ Hya | 鹑火星 | Chúnhuǒxīng | Quail of Mars |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | σ Hya | 柳宿二 | Liǔsùèr | 2nd star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | η Hya | 柳宿三 | Liǔsùsān | 3rd star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | ρ Hya | 柳宿四 | Liǔsùsì | 4th star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | ε Hya | 柳宿五 | Liǔsùwǔ | 5th star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | ζ Hya | 柳宿六 | Liǔsùliù | 6th star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | ω Hya | 柳宿七 | Liǔsùqī | 7th star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | θ Hya | 柳宿八 | Liǔsùbā | 8th star |
| Vermilion Bird of the South (南方朱雀) | 柳 | Liǔ | Willow | 柳 | Liǔ | Willow | 10 Hya | 柳宿增一 | Liǔsùzēngyī | 1st additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | α Hya |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | α Hya | 星宿一 | Xīngsùyī | 1st star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | α Hya | 星宿距星 | Xīngsùjùxīng | Separated star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | α Hya | 蛇首一 | Shéshǒuyī | Leading (star) in "snake" and stand alone |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | α Hya | 星宿中央大星 | Xīngsùzhōngyāngdàxīng | Big center star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | τ$^1$ Hya | 星宿二 | Xīngsùèr | 2nd star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | τ$^2$ Hya | 星宿三 | Xīngsùsān | 3rd star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | ι Hya | 星宿四 | Xīngsùsì | 4th star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 27 Hya | 星宿五 | Xīngsùwǔ | 5th star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 26 Hya | 星宿六 | Xīngsùliù | 6th star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | HD 82428 | 星宿七 | Xīngsùqī | 7th star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 29 Hya | 星宿增一 | Xīngsùzēngyī | 1st additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 24 Hya | 星宿增二 | Xīngsùzēngèr | 2nd additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 20 Hya | 星宿增三 | Xīngsùzēngsān | 3rd additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 19 Hya | 星宿增四 | Xīngsùzēngsì | 4th additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 21 Hya | 星宿增五 | Xīngsùzēngwǔ | 5th additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 23 Hya | 星宿增六 | Xīngsùzēngliù | 6th additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 28 Hya | 星宿增七 | Xīngsùzēngqī | 7th additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 33 Hya | 星宿增八 | Xīngsùzēngbā | 8th additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 37 Hya | 星宿增十三 | Xīngsùzēngshísān | 13th additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 星 | Xīng | Star | 34 Hya | 星宿增十五 | Xīngsùzēngshíwǔ | 15th additional star |
| Vermilion Bird of the South (南方朱雀) | 星 | Xīng | Star | 軒轅 | Xuānyuán | Xuanyuan | 2 Sex | 軒轅增四十六 | Xuānyuánzēngsìshíliù | 46th additional star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | υ$^1$ Hya |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | υ$^1$ Hya | 張宿一 | Zhāngsùyī | 1st star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | υ$^1$ Hya | 張宿距星 | Zhāngsùjùxīng | Separated star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | υ$^1$ Hya | 張宿西第二星 | Zhāngsùxīdìèrxīng | 2nd western star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | λ Hya | 張宿二 | Zhāngsùèr | 2nd star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | μ Hya | 張宿三 | Zhāngsùsān | 3rd star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | HD 87344 | 張宿四 | Zhāngsùsì | 4th star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | κ Hya | 張宿五 | Zhāngsùwǔ | 5th star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | φ$^1$ Hya | 張宿六 | Zhāngsùliù | 6th star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | υ$^2$ Hya | 張宿增一 | Zhāngsùzēngyī | 1st additional star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | φ$^2$ Hya | 張宿增三 | Zhāngsùzēngsān | 3rd additional star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | 44 Hya | 張宿增四 | Zhāngsùzēngsì | 4th additional star |
| Vermilion Bird of the South (南方朱雀) | 張 | Zhāng | Extended Net | 張 | Zhāng | Extended Net | HD 88215 | 張宿增五 | Zhāngsùzēngwǔ | 5th additional star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | ν Hya | 翼宿五 | Yìsùwǔ | 5th star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | HD 100307 | 翼宿十八 | Yìsùshíbā | 18th star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | HD 96819 | 翼宿十九 | Yìsùshíjiǔ | 19th star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | χ$^1$ Hya | 翼宿二十 | Yìsùèrshí | 20th star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | II Hya | 翼宿二十一 | Yìsùèrshíyī | 21st star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | HD 103462 | 翼宿二十二 | Yìsùèrshíèr | 22nd star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | b$^1$ Hya | 翼宿增三 | Yìsùzēngsān | 3rd additional star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | b$^3$ Hya | 翼翼宿增五 | Yìsùèrzēngwǔ | 5th additional star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | HD 95698 | 翼宿增六 | Yìsùèrzēngliù | 6th additional star |
| Vermilion Bird of the South (南方朱雀) | 翼 | Yì | Wings | 翼 | Yì | Wings | HD 96819 | 翼宿增七 | Yìsùèrzēngqī | 7th additional star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | β Hya |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | β Hya | 青丘一 | Qīngqiūyī | 1st star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | β Hya | 土公西星 | Tǔgōngxīxīng | Star in the west on Official for Earthworks and Buildings constellation |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | HD 104213 | 青丘二 | Qīngqiūèr | 2nd star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | 17 Crt | 青丘三 | Qīngqiūsān | 3rd star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | HD 100393 | 青丘四 | Qīngqiūsì | 4th star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | ξ Hya | 青丘五 | Qīngqiūwǔ | 5th star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | HD 100623 | 青丘六 | Qīngqiūliù | 6th star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | ο Hya | 青丘七 | Qīngqiūqī | 7th star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | HD 101666 | 青丘增一 | Qīngqiūzēngyī | 1st additional star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | HD 100953 | 青丘增二 | Qīngqiūzēngèr | 2nd additional star |
| Vermilion Bird of the South (南方朱雀) | 軫 | Zhěn | Chariot | 青丘 | Qīngqiū | Green Hill | HD 100910 | 青丘增三 | Qīngqiūzēngsān | 3rd additional star |