The Twins
Gemini
Genitive: Geminorum · abbreviation Gem
Best evening month
February
Visible from
66°S to 90°N
Centre RA
7h 09m 00s
Centre Dec
+23° 30′
In your sky
Share your location to see where this is in your sky right now.
Mythology & origin
Castor and Pollux, twin brothers among the Argonauts. When mortal Castor died, immortal Pollux asked to share his immortality so they could remain together.
Ptolemy · Almagest, 2nd century AD
Zodiac
♊︎ The sign of Gemini
The astrological sign shares this name but no longer matches the stars' dates — see why.
Brightest stars
- mag 1.16
Pollux
β Geminorum · HIP 37826
- mag 1.58
Castor
α Geminorum · HIP 36850
- mag 1.93
Alhena
γ Geminorum · HIP 31681
- mag 2.87
Tejat
μ Geminorum · HIP 30343
- mag 3.06
Mebsuta
ε Geminorum · HIP 32246
- mag 3.31
Propus
η Geminorum · HIP 29655
- mag 3.35
Alzirr
ξ Geminorum · HIP 32362
- mag 3.50
Wasat
δ Geminorum · HIP 35550
- mag 3.57
κ Geminorum
HIP 37740
- mag 3.58
λ Geminorum
HIP 35350