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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
north SunriseRise: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sunny DaytimeWhat's Visible Now?
All Constellations » Gemini » 

33 Geminorum

Altitude: 12.5°   Azimuth: 280.4°   Direction: West

33 Geminorum is a variable and double giant star in the constellation of Gemini.

33 Geminorum visual magnitude is 5.85. Because of its reltive faintness, 33 Geminorum should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 33 Geminorum:


33 Geminorum is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 12.5°
Azimuth: 280.4°
Direction: West

Celestial coordinates and finder chart of 33 Geminorum

33 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 33 Geminorum are provided in the following table:

06h 49m 49s
+16° 12’ 10”

The simplified sky map below shows the position of 33 Geminorum in the sky:

Finder chart 33 Geminorum star
Simplified finder chart for 33 Geminorum.

Visibility of 33 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 33 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: 73.8°
Max altitude: 54.7°
Azimuth: 286.2°

Digitized Sky Survey image of 33 Geminorum

The image below is a photograph of 33 Geminorum from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 33 Geminorum is -0.017 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 33 Geminorum star
DSS2 image of 33 Geminorum. The red arrow shows the motion of 33 Geminorum during the next 10000 years (-2.83 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of 33 Geminorum from the Sun and relative movement

33 Geminorum is distant 926.14 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

284.09 pc
926.14 ly
13 km/s
-0.017 arcsec/year
-0.012 arcsec/year

Spectral properties of 33 Geminorum

33 Geminorum belongs to spectral class B7 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 33 Geminorum is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 33 Geminorum. Attribution: Richard Powell / CC BY-SA

33 Geminorum star system properties

33 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 33 Geminorum double sysyem:

27.5 arcsec

Alternative designations of 33 Geminorum

33 Geminorum