🌙 Twenty-Eight Mansions

二十八宿

The Twenty-Eight Mansions of the Moon

Chinese Stellar Astronomy — 二十八宿

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Real Sky Calculation

Where Is the Moon Now?

SAGE calculates the Moon's geocentric apparent position against the Twenty-Eight Mansion boundary system using Skyfield and NASA/JPL DE421.

Or calculate a specific UTC instant

The Four Celestial Palaces

Seven mansions belong to each of the four celestial guardians.

🐉

Azure Dragon

East • Spring • Wood

角亢氐房心尾箕

🐢

Black Tortoise

North • Winter • Water

斗牛女虛危室壁

🐅

White Tiger

West • Autumn • Metal

奎婁胃昴畢觜參

🔥

Vermilion Bird

South • Summer • Fire

井鬼柳星張翼軫

The Twenty-Eight Mansions

Mansion 1

Horn

角

Jiao

Azure Dragon · East · Wood

Determinative star: Alpha Virginis (α Vir)

Mansion 2

Neck

亢

Kang

Azure Dragon · East · Wood

Determinative star: Kappa Virginis (κ Vir)

Mansion 3

Root

氐

Di

Azure Dragon · East · Wood

Determinative star: Alpha Librae (α Lib)

Mansion 4

Room

房

Fang

Azure Dragon · East · Wood

Determinative star: Pi Scorpii (π Sco)

Mansion 5

Heart

心

Xin

Azure Dragon · East · Wood

Determinative star: Sigma Scorpii (σ Sco)

Mansion 6

Tail

尾

Wei

Azure Dragon · East · Wood

Determinative star: Mu Scorpii (μ Sco)

Mansion 7

Winnowing Basket

箕

Ji

Azure Dragon · East · Wood

Determinative star: Gamma Sagittarii (γ Sgr)

Mansion 8

Southern Dipper

斗

Dou

Black Tortoise · North · Water

Determinative star: Phi Sagittarii (φ Sgr)

Mansion 9

Ox

牛

Niu

Black Tortoise · North · Water

Determinative star: Beta Capricorni (β Cap)

Mansion 10

Girl

女

Nu

Black Tortoise · North · Water

Determinative star: Epsilon Aquarii (ε Aqr)

Mansion 11

Emptiness

虛

Xu

Black Tortoise · North · Water

Determinative star: Beta Aquarii (β Aqr)

Mansion 12

Rooftop

危

Wei

Black Tortoise · North · Water

Determinative star: Alpha Aquarii (α Aqr)

Mansion 13

Encampment

室

Shi

Black Tortoise · North · Water

Determinative star: Alpha Pegasi (α Peg)

Mansion 14

Wall

壁

Bi

Black Tortoise · North · Water

Determinative star: Gamma Pegasi (γ Peg)

Mansion 15

Legs

奎

Kui

White Tiger · West · Metal

Determinative star: Eta Andromedae (η And)

Mansion 16

Bond

婁

Lou

White Tiger · West · Metal

Determinative star: Beta Arietis (β Ari)

Mansion 17

Stomach

胃

Wei

White Tiger · West · Metal

Determinative star: 35 Arietis (35 Ari)

Mansion 18

Hairy Head

昴

Mao

White Tiger · West · Metal

Determinative star: 17 Tauri (17 Tau)

Mansion 19

Net

畢

Bi

White Tiger · West · Metal

Determinative star: Epsilon Tauri (ε Tau)

Mansion 20

Turtle Beak

觜

Zi

White Tiger · West · Metal

Determinative star: Lambda Orionis (λ Ori)

Mansion 21

Three Stars

參

Shen

White Tiger · West · Metal

Determinative star: Zeta Orionis (ζ Ori)

Mansion 22

Well

井

Jing

Vermilion Bird · South · Fire

Determinative star: Mu Geminorum (μ Gem)

Mansion 23

Ghost

鬼

Gui

Vermilion Bird · South · Fire

Determinative star: Theta Cancri (θ Cnc)

Mansion 24

Willow

柳

Liu

Vermilion Bird · South · Fire

Determinative star: Delta Hydrae (δ Hya)

Mansion 25

Star

星

Xing

Vermilion Bird · South · Fire

Determinative star: Alpha Hydrae (α Hya)

Mansion 26

Extended Net

張

Zhang

Vermilion Bird · South · Fire

Determinative star: Upsilon Hydrae (υ Hya)

Mansion 27

Wings

翼

Yi

Vermilion Bird · South · Fire

Determinative star: Alpha Crateris (α Crt)

Mansion 28

Chariot

軫

Zhen

Vermilion Bird · South · Fire

Determinative star: Gamma Corvi (γ Crv)

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