Your guide to the Solar System and the night sky
By donating now you help keep this site alive and free from ads. Please consider supporting this project.
🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 5:59  ☀️ Transit: 12:05  🌅 Sunset: 18:13

Tejat - μ Geminorum (mu Geminorum)

Tejat, also designated as μ Geminorum (mu Geminorum), is a variable and multiple giant star in the constellation of Gemini.

Tejat visual magnitude is 2.88. Thanks to its high brightness, Tejat is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.

The table below summarizes the key facts about Tejat:

Tejat - μ Geminorum (mu Geminorum) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 33°.

Celestial coordinates and finder chart of Tejat

Tejat 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 Tejat are provided in the following table:

06h 22m 57s
+22° 30’ 48”

The simplified sky map below shows the position of Tejat in the sky:

Finder chart Tejat - μ Geminorum (mu Geminorum) star
Simplified finder chart for Tejat - μ Geminorum (mu Geminorum).

Visibility of Tejat from your location

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

Today's Tejat - μ Geminorum (mu Geminorum) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 67.5°
Max altitude: 61.0°
Azimuth: 292.5°
Tejat - μ Geminorum (mu Geminorum) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Tejat

The image below is a photograph of Tejat 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 Tejat is 0.054 arcsec per year in Right Ascension and -0.111 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of Tejat - μ Geminorum (mu Geminorum) star
DSS2 image of Tejat. The red arrow shows the motion of Tejat during the next 1000 years (0.90 arcmin in Right Ascension and -1.85 arcmin in declination);

Distance of Tejat from the Sun and relative movement

Tejat is distant 231.70 light years from the Sun and it is moving far from the Sun at the speed of 55 kilometers per second.

71.07 pc
231.70 ly
55 km/s
0.054 arcsec/year
-0.111 arcsec/year

Spectral properties of Tejat

Tejat belongs to spectral class M3 and has a luminosity class of III corresponding to a giant star.


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

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

Tejat star system properties

Tejat 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 Tejat double sysyem:

121.7 arcsec

Alternative designations of Tejat

μ Geminorum
(mu Geminorum)
13 Geminorum