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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:55  
clear_day Transit: 12:11  
SunsetSet: 17:29
sunny DaytimeWhat's Visible Now?
All Constellations » Gemini » 

λ Geminorum (lambda Geminorum)

Altitude: -19.2°   Azimuth: 337.1°   Direction: North-North-West

λ Geminorum is a variable and multiple main-sequence star in the constellation of Gemini.

λ Geminorum visual magnitude is 3.58. Because of its moderate brightness, λ Geminorum should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of λ Geminorum is -0.048 arcsec per year in Right Ascension and -0.037 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of λ Geminorum (lambda Geminorum) star
DSS2 image of λ Geminorum. The red arrow shows the motion of λ Geminorum during the next 10000 years (-8.00 arcmin in Right Ascension and -6.17 arcmin in declination);

Key facts about λ Geminorum


λ Geminorum (lambda Geminorum) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -19.2°
Azimuth: 337.1°
Direction: North-North-West

Celestial coordinates and finder chart of λ Geminorum

λ 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 λ Geminorum are provided in the following table:

07h 18m 05s
+16° 32’ 25”

The simplified sky map below shows the position of λ Geminorum in the sky:

Finder chart λ Geminorum (lambda Geminorum) star
Simplified finder chart for λ Geminorum (lambda Geminorum).

Visibility of λ Geminorum from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's λ Geminorum (lambda Geminorum) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 73.5°
Max altitude: 55.1°
Azimuth: 286.5°

Distance of λ Geminorum from the Sun and relative movement

λ Geminorum is distant 94.25 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

28.91 pc
94.25 ly
-9 km/s
-0.048 arcsec/year
-0.037 arcsec/year

Spectral properties of λ Geminorum

λ Geminorum belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.


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

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

λ Geminorum star system properties

λ 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 λ Geminorum double sysyem:

0 arcsec

Alternative designations of λ Geminorum

λ Geminorum
(lambda Geminorum)
54 Geminorum
Wo 9231 A