51 Geminorum

Above the horizon. Rise: 8:42 | Tran: 16:04 | Set: 23:27

Alt: 25.71° Az: 96.33° Direction: East

51 Geminorum is a variable and multiple giant star of spectral class M4 in the constellation of Gemini.

51 Geminorum visual magnitude is 5. Because of its moderate brightness, 51 Geminorum is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of 51 Geminorum. The red arrow shows the motion of 51 Geminorum during the next 10000 years (2.17 arcmin in Right Ascension and -7.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 07h 14m 49s

Declination +16° 06’ 50”

Hour Angle 19h 24m 55s

Sidereal Time 02h 39m 44s

J2000

Right Ascension 07h 13m 22s

Declination +16° 09’ 32”

Galactic Coordinates

Galactic Longitude 200.78°

Galactic Latitude 12.04°

Finder Chart

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Finder chart for 51 Geminorum.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5

Class Giant

Absolute magnitude -1.66

Spectral Type M4III

Color Index (B-V) 1.66

Temperature 3568K

The red dot in the diagram below shows where 51 Geminorum is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 51 Geminorum. Attribution: Richard Powell / CC BY-SA

Star System Properties

51 Geminorum is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 51 Geminorum double sysyem:

Main star magnitude 5

Secondary star magnitude 10.2

Magnitude difference 5.2

Separation 149.2 arcsec

Distance, Radial Speed, Proper Motion

51 Geminorum is distant 699.57 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

Distance (parsec) 214.59

Distance (light year) 699.57

Radial Speed -9 km/s

Proper Motion RA 0.013 arcsec/y

Proper Motion Dec -0.042"/y

Alternative Designations

Flamsteed designation 51 Geminorum

Henry Draper Catalogue HD55383

SAO Catalogue SAO96638

Hipparcos Catalogue HIP34909

Durchmusterung Catalogue BD+16 1417

FK5 Catalogue 1188

General Catalogue of Variable Stars BQ Gem

Visibility from Your Location

Today's 51 Geminorum rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 73.9° RISE 8:42

Max altitude: 54.6° TRANSIT 16:04

Azimuth: 286.1° SET 23:27

Set Location

Other stars in Gemini