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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:49  
clear_day Transit: 12:50  
SunsetSet: 18:50 south
wb_twilight Nautical TwilightWhat's Visible Now
All Constellations » Gemini » 

38 Geminorum

Altitude: -25.2°   Azimuth: 5.1°   Direction: North

38 Geminorum is a variable and multiple hypergiant star in the constellation of Gemini.

38 Geminorum visual magnitude is 4.65. Because of its moderate brightness, 38 Geminorum should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about 38 Geminorum:


38 Geminorum is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -25.2°
Azimuth: 5.1°
Direction: North

Celestial coordinates and finder chart of 38 Geminorum

38 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 38 Geminorum are provided in the following table:

06h 54m 38s
+13° 10’ 40”

The simplified sky map below shows the position of 38 Geminorum in the sky:

Finder chart 38 Geminorum star
Simplified finder chart for 38 Geminorum.

Visibility of 38 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 38 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: 76.8°
Max altitude: 51.7°
Azimuth: 283.2°

Digitized Sky Survey image of 38 Geminorum

The image below is a photograph of 38 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 38 Geminorum is 0.078 arcsec per year in Right Ascension and -0.083 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 38 Geminorum star
DSS2 image of 38 Geminorum. The red arrow shows the motion of 38 Geminorum during the next 10000 years (13.00 arcmin in Right Ascension and -13.83 arcmin in declination);

Distance of 38 Geminorum from the Sun and relative movement

38 Geminorum is distant 91.09 light years from the Sun and it is moving far from the Sun at the speed of 24 kilometers per second.

27.94 pc
91.09 ly
24 km/s
0.078 arcsec/year
-0.083 arcsec/year

Spectral properties of 38 Geminorum

38 Geminorum belongs to spectral class F0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where 38 Geminorum is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 38 Geminorum. Attribution: Richard Powell / CC BY-SA

38 Geminorum star system properties

38 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 38 Geminorum double sysyem:

7 arcsec

Alternative designations of 38 Geminorum

38 Geminorum
Wo 9220 A