30 Geminorum is a double hypergiant star in the constellation of Gemini.
30 Geminorum visual magnitude is 4.49. Because of its moderate brightness, 30 Geminorum should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.
The table below summarizes the key facts about 30 Geminorum:
Celestial coordinates and finder chart of 30 Geminorum
30 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 30 Geminorum are provided in the following table:
The simplified sky map below shows the position of 30 Geminorum in the sky:
Visibility of 30 Geminorum from your location
Digitized Sky Survey image of 30 Geminorum
The image below is a photograph of 30 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 30 Geminorum is -0.003 arcsec per year in Right Ascension and -0.058 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of 30 Geminorum from the Sun and relative movement
30 Geminorum is distant 275.80 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.
Spectral properties of 30 Geminorum
30 Geminorum belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.
The red dot in the diagram below shows where 30 Geminorum is situated in the Hertzsprung–Russell diagram.
30 Geminorum star system properties
30 Geminorum is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 30 Geminorum double sysyem: