9 Geminorum

Above the horizon. Rise: 7:09 | Tran: 15:20 | Set: 23:32

Alt: 61.82° Az: 192.45° Direction: South-South-West

9 Geminorum is a supergiant star of spectral class B3 in the constellation of Gemini.

9 Geminorum visual magnitude is 6.25. Because of its faintness, 9 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 9 Geminorum. The red arrow shows the motion of 9 Geminorum during the next 100000 years (0.00 arcmin in Right Ascension and -1.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 06h 18m 31s

Declination +23° 43’ 47”

Hour Angle 00h 25m 32s

Sidereal Time 06h 44m 04s

J2000

Right Ascension 06h 16m 58s

Declination +23° 44’ 26”

Galactic Coordinates

Galactic Longitude 187.99°

Galactic Latitude 3.53°

Finder Chart

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Finder chart for 9 Geminorum.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.25

Class Supergiant

Absolute magnitude -2.78

Spectral Type B3I

Color Index (B-V) 0.45

Temperature 6625K

The red dot in the diagram below shows where 9 Geminorum is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 9 Geminorum. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

9 Geminorum is distant 2,089.74 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

Distance (parsec) 641.03

Distance (light year) 2,089.74

Radial Speed 13 km/s

Proper Motion Dec -0.001"/y

Alternative Designations

Flamsteed designation 9 Geminorum

Henry Draper Catalogue HD43384

SAO Catalogue SAO78176

Hipparcos Catalogue HIP29840

Durchmusterung Catalogue BD+23 1275

Visibility from Your Location

Today's 9 Geminorum rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 66.3° RISE 7:09

Max altitude: 62.2° TRANSIT 15:20

Azimuth: 293.7° SET 23:32

Set Location

Other stars in Gemini