Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:50  
clear_day Transit: 12:56  
SunsetSet: 21:02 south
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All Constellations » Auriga » 

Mahasim - θ Aurigae (theta Aurigae)

Mahasim, also designated as θ Aurigae (theta Aurigae), is a variable and multiple hypergiant star in the constellation of Auriga.

Mahasim visual magnitude is 2.62. Thanks to its high brightness, Mahasim 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 Mahasim:

Mahasim - θ Aurigae (theta Aurigae) is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 7°.

Celestial coordinates and finder chart of Mahasim

Mahasim is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Mahasim are provided in the following table:

05h 59m 43s
+37° 12’ 44”

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

Finder chart Mahasim - θ Aurigae (theta Aurigae) star
Simplified finder chart for Mahasim - θ Aurigae (theta Aurigae).

Visibility of Mahasim 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 Mahasim - θ Aurigae (theta Aurigae) 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: 52.8°
Max altitude: 75.7°
Azimuth: 307.2°
Mahasim - θ Aurigae (theta Aurigae) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Mahasim

The image below is a photograph of Mahasim 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 Mahasim is 0.048 arcsec per year in Right Ascension and -0.081 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Mahasim - θ Aurigae (theta Aurigae) star
DSS2 image of Mahasim. The red arrow shows the motion of Mahasim during the next 10000 years (8.00 arcmin in Right Ascension and -13.50 arcmin in declination);

Distance of Mahasim from the Sun and relative movement

Mahasim is distant 173.13 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

53.11 pc
173.13 ly
30 km/s
0.048 arcsec/year
-0.081 arcsec/year

Spectral properties of Mahasim

Mahasim belongs to spectral class A0 Mahasim is also a Si chemically peculiar star.


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

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

Mahasim star system properties

Mahasim 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 Mahasim double sysyem:

3.5 arcsec

Alternative designations of Mahasim

θ Aurigae
(theta Aurigae)