SkyRef / Constellations

The Gemini constellation

The Twins. Best placed in October. It sits well north on the sky and is comfortably placed for northern hemisphere observers.

Where and when

Also known asthe Twins
Best monthOctober
Right ascension7.2h
Declination+24°
Line segments2

Finding it

Gemini, known in English as the Twins, is centred near right ascension 7.2 hours, declination +24°. It sits well north on the sky and is comfortably placed for northern hemisphere observers.

It reaches its highest point in the sky around local midnight in October, which is when it is easiest to pick out. Earlier in the year it rises before dawn; later, it is already setting in the evening.

Bright stars in this part of the sky

StarDesignationMagnitude
Polluxβ Gem1.14
Alhenaγ Gem1.93
Castorα Gem1.98

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Other constellations

AndromedaAntliaApusAquariusAquilaAraAriesAurigaBoötesCaelumCamelopardalisCancerCanes VenaticiCanis MajorCanis MinorCapricornusCarinaCassiopeiaCentaurusCepheusCetusChamaeleonCircinusColumbaComa BerenicesCorona AustrinaCorona BorealisCorvusCraterCruxCygnusDelphinusDoradoDracoEquuleusEridanusFornaxGeminiGrusHercules