Sky Tonight
ST
Location settings
Santa Clara, US
37.4°/-122°
GMT -9
Waning21:52 - 04:07
⌕
Go to My SkyLog in
☾
☰
Sky-Tonight.com / Constellations / Gemini
  • 🌐 EN
    ENDEESFRPT中文
  • Tonight
    • Brightest Planets and Stars Tonight
    • Milky Way Tonight
  • Solar System
    • Sun
    • Real-Time Sun Map
    • Sunspots Activity
    • Aurora Activity
    • Moon
    • Interactive Lunar Map
    • Planets
    • Mercury
    • Venus
    • Mars
    • Jupiter
    • Saturn
    • Satellite Flyovers
    • ISS
    • Close Approaches
  • Small Bodies
    • Asteroids
    • Comets
    • Recently Updated Comets
  • Stars
    • Brightest Stars
  • Meteor Showers
    • Active Meteor Showers
    • Major Meteor Showers
  • Solar Eclipses
    • Future Solar Eclipses
    • Past Solar Eclipses
  • Lunar Eclipses
    • Future Lunar Eclipses
    • Past Lunar Eclipses
  • Deep Sky Objects
    • Seasonal Nebulae
    • Messier Objects
    • Nebulae
    • Star Clusters
    • Galaxies
  • Double Stars
    • Naked-eye
    • Binocular
    • Physical pairs
    • Color-contrasting
    • Triple systems
    • Multiple systems
  • Constellations
    • Visible Tonight
    • Seasonal
    • Ecliptic
    • All 88 Constellations
  • Maps
    • Mars Map
    • Mercury Map
    • Earth
    • Cloud Cover Map
  • Contact Us
    • Feedback

Observation Settings

Or select it on the map:
This Earth map lets you select the observer’s location used to calculate the bearing and elevation of celestial objects. The selected point determines how the sky, rise and set times, and object positions are shown.
Your location: Santa Clara, United States
Timezone:
Latitude:
37.3541
Longitude:
-121.955

Gemini Constellation

Double-click to unlock the map.
Gemini, the twins, is a zodiac constellation representing the mythological twins Castor and Pollux. It is known for its bright stars, Castor and Pollux, and its prominent place in the winter sky.

Gemini (The Twins)

Gemini is a prominent constellation in the northern sky, representing the mythological twins Castor and Pollux. It is one of the 13 ecliptic constellations and is easily recognizable by its two bright stars, named after the twins themselves. Gemini is rich in both mythological significance and astronomical features, making it a favorite among stargazers.

Key Features

  • Bright Stars: Gemini’s two brightest stars mark the heads of the twins:
    • Castor: A complex star system consisting of six stars, appearing as a single point of light to the naked eye.
    • Pollux: The brightest star in Gemini, an orange giant located approximately 34 light-years away.
  • Deep-Sky Objects: Gemini contains several notable celestial objects:
    • Messier 35 (M35): A large and bright open star cluster located near the feet of the twins.
    • Eskimo Nebula (NGC 2392): A planetary nebula resembling a face surrounded by a parka hood.

Mythological Background

In Greek mythology, Gemini represents the twin brothers Castor and Pollux, the sons of Leda. Castor was mortal, while Pollux was immortal, being the son of Zeus. When Castor died, Pollux pleaded with Zeus to reunite them, leading to their placement among the stars as the constellation Gemini. Their story symbolizes brotherly love, loyalty, and sacrifice.

The constellation also features prominently in Roman and other ancient myths, often as symbols of companionship, strength, and duality.

Cultural Significance

Gemini has been an important constellation for navigation and timekeeping. Its rising and setting times have historically been used to mark seasonal changes. The twins’ association with sailors made them a symbol of protection and guidance during maritime journeys.

Gemini Rise and Set Timetable

TimeElevation
Moonrise, 77.9% illuminated 19:13-27°
Astronomical observing session begins21:52-6°
Gemini rise22:24
Astronomical observing session ends04:0765°
Civil sunrise04:3770°
Sunrise05:0473°
Gemini transit05:3374°
Moonset10:5520°

Track Gemini position throughout the night

← 1 October 2026 →

Elevation (degrees)
Time
Altitude
Azimuth
Shift the map to change the time and observe Gemini changing position in the night sky.

Annual motion of Gemini

Time
DateFri, 2 October 2026
Twilight start18:16
Twilight end03:35
Twilight duration9h 18m
Rise22:20
Set12:38
Elevation at transit74°
Transit time05:29
Equatorial coordinatesRA: 07h 07m 16s", Dec: 21° 31' 49s