3 Geminorum is a variable and multiple supergiant star in the constellation of Gemini.
3 Geminorum visual magnitude is 5.75. Because of its reltive faintness, 3 Geminorum should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.
The table below summarizes the key facts about 3 Geminorum:
Celestial coordinates and finder chart of 3 Geminorum
3 Geminorum is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 3 Geminorum are provided in the following table:
The simplified sky map below shows the position of 3 Geminorum in the sky:
Visibility of 3 Geminorum from your location
Digitized Sky Survey image of 3 Geminorum
The image below is a photograph of 3 Geminorum from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 3 Geminorum is 0.007 arcsec per year in Right Ascension and -0.001 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Distance of 3 Geminorum from the Sun and relative movement
3 Geminorum is distant 32,600,000.00 light years from the Sun and it is moving far from the Sun at the speed of 16 kilometers per second.
Spectral properties of 3 Geminorum
3 Geminorum belongs to spectral class B2 and has a luminosity class of I corresponding to a supergiant star.
The red dot in the diagram below shows where 3 Geminorum is situated in the Hertzsprung–Russell diagram.
3 Geminorum star system properties
3 Geminorum is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 3 Geminorum double sysyem: