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Almanac > Constellations

Gemini

Gemini is one of the 88 recognized constellations. It is best seen in February between latitudes +90° and -60°.
 

 



Gemini

 
 
Fact Sheet

Genitive

  Geminorum

Abbreviation

  Gem

Brightness

  9.15

Location

  7 h (Right Ascension)

  +20° (Declination)

Area

  514 square degrees

Number of Visible Stars

  47

Notable Stars

  Alhena
Almeisan
Castor
Mebsuta
Mekbuda
Pollux
Propus
Tejat
Wasat

Alpha Star

  Castor

Brightest Star

  Pollux (ß Gem) (33.7 ly)

Best Seen

  +90° and -60° (Best Latitudes)

  February (Best Month)

 
Description

Overview:
Gemini (pronouced gem' in eye) is the 30th largest constellation in the night sky with an area of 514 square degrees. The name of Gemini means Twins.

Location:
Gemini is located at RA 7 h and Declination +20°. Gemini is best seen between latitudes +90° and -60° in the month of February. Gemini is bordered by the following constellations: Auriga, Cancer, Canis Minor, Lynx, Monoceros, Orion, Taurus.

Stars:
Gemini contains within its borders approximately 47 visible stars. The principal star of Gemini is Castor. The brightest of Gemini's stars is Pollux (ß Gem) (33.7 ly). Gemini also contains within its boundries the following notable stars: Alhena, Almeisan, Castor, Mebsuta, Mekbuda, Pollux, Propus, Tejat, Wasat.

Brightness:
Gemini is the 64th brightest constellation with a visual magnitude of 9.15.