40 Geminorum

Above the horizon. Rise: 0:18 | Tran: 8:49 | Set: 17:16

Alt: 54.25° Az: 123.07° Direction: East-South-East

40 Geminorum is a giant star of spectral class B8 in the constellation of Gemini.

40 Geminorum visual magnitude is 6.4. Because of its faintness, 40 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 40 Geminorum. The red arrow shows the motion of 40 Geminorum during the next 10000 years (-1.83 arcmin in Right Ascension and -1.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 07h 00m 59s

Declination +25° 52’ 42”

Hour Angle 21h 48m 08s

Sideral Time 04h 49m 07s

J2000

Right Ascension 06h 59m 27s

Declination +25° 54’ 51”

Galactic Coordinates

Galactic Longitude 190.31°

Galactic Latitude 13.14°

Finder Chart

Simplified finder chart for 40 Geminorum.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.4

Class Giant

Absolute magnitude -1.43

Spectral Type B8III

Color Index (B-V) -0.11

Temperature 11744K

The red dot in the diagram below shows where 40 Geminorum is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 40 Geminorum. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

40 Geminorum is distant 1,198.53 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

Distance (parsec) 367.65

Distance (light year) 1,198.53

Radial Speed 12 km/s

Proper Motion RA -0.011 arcsec/y

Proper Motion Dec -0.008"/y

Alternative Designations

Flamsteed designation 40 Geminorum

Henry Draper Catalogue HD51688

SAO Catalogue SAO78947

Hipparcos Catalogue HIP33650

Durchmusterung Catalogue BD+26 1411

Visibility from Your Location

Today's 40 Geminorum rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 64.1° RISE 0:18

Max altitude: 64.4° TRANSIT 8:49

Azimuth: 295.9° SET 17:16

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

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Location

Other stars in Gemini