English Name: The Twin
Hemisphere: Northern Hemisphere
Location: Between the constellations of Cancer and Auriga.
Visible between latitudes: +90 and -60 degrees
Best season: Winter
Seen in three seasons: Autumn, Winter and Spring
Best seen in: Early February
Seen between: November and April
Right Ascension (RA): 07 hour
Declination (DEC): +20 degrees
Area (square degrees): 514 (30th)
Gemini (The Twin)
- The constellation of the Zodiac; the Sun passes through it from 21st June and 20th July.
- Its brightest stars are Castor and Pollux are twin brothers, together known as the Discuri; an extrasolar planet orbiting massive Pollux star there.
- M35 – Open Cluster; easily visible with binoculars, the compact Open Cluster NGC 2158 lies directly southwest of M35.
Features of Interest
- NGC 2392 – The Eskimo Nebula or Clown Face Nebula; planetary nebula with a magnitude +9.2 – in a large telescope, its magnitude +10.0 central star is visible, along with its blue-green elliptical disk. (See the photo: seen by small telescope / large telescope.)
- Castor (Alpha Gem)
- Pollux (Beta Gem)
- ALHENA (Gamma Gem)
- Wasat (Delta Gem)
- Mebsuta (Epsilon Gem)
- Mekbuda (Zeta Gem)
- Propus (Eta Gem)
- Propus (Iota Gem)
- Tejat Posterior (Mu Gem)
- Alzirr (Xi Gem)
- Propus (1 Gem)
- Photo of the constellation; Gemini, as it appears to the naked eye. (Lines have been added for clarity.)
- Sky Chart – Gemini
- List of stars in Gemini.
Back to The 88 Constellations Lists page.