25 Geminorum

Above the horizon. Rise: 6:46 | Tran: 15:33 | Set: 0:19

Alt: 0.33° Az: 41.34° Direction: North-East

25 Geminorum is a multiple supergiant star of spectral class G5 in the constellation of Gemini.

25 Geminorum visual magnitude is 6.42. Because of its faintness, 25 Geminorum is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of 25 Geminorum. The red arrow shows the motion of 25 Geminorum during the next 100000 years (13.33 arcmin in Right Ascension and -15.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 06h 42m 56s

Declination +28° 10’ 13”

Hour Angle 15h 14m 07s

Sidereal Time 21h 57m 04s

J2000

Right Ascension 06h 41m 21s

Declination +28° 11’ 47”

Galactic Coordinates

Galactic Longitude 186.47°

Galactic Latitude 10.42°

Finder Chart

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Finder chart for 25 Geminorum.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.42

Class Supergiant

Absolute magnitude -1.76

Spectral Type G5I

Color Index (B-V) 1.09

Temperature 4537K

The red dot in the diagram below shows where 25 Geminorum is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 25 Geminorum. Attribution: Richard Powell / CC BY-SA

Star System Properties

25 Geminorum is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 25 Geminorum double sysyem:

Main star magnitude 6.42

Secondary star magnitude 10.32

Magnitude difference 3.9

Separation 55.9 arcsec

Distance, Radial Speed, Proper Motion

25 Geminorum is distant 1,411.26 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 432.90

Distance (light year) 1,411.26

Radial Speed -6 km/s

Proper Motion RA 0.008 arcsec/y

Proper Motion Dec -0.009"/y

Alternative Designations

Flamsteed designation 25 Geminorum

Henry Draper Catalogue HD47731

SAO Catalogue SAO78636

Hipparcos Catalogue HIP32019

Durchmusterung Catalogue BD+28 1207

Visibility from Your Location

Today's 25 Geminorum rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 61.8° RISE 6:46

Max altitude: 66.7° TRANSIT 15:33

Azimuth: 298.2° SET 0:19

Set Location

Other stars in Gemini