Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

Almaaz - ε Aurigae (epsilon Aurigae)

Almaaz, also designated as ε Aurigae (epsilon Aurigae), is a variable and multiple hypergiant star in the constellation of Auriga.

Almaaz visual magnitude is 2.99. Thanks to its high brightness, Almaaz 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 Almaaz:

2.99
Hypergiant
Almaaz - ε Aurigae (epsilon Aurigae) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 26°.

Celestial coordinates and finder chart of Almaaz

Almaaz 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 Almaaz are provided in the following table:

05h 01m 58s
+43° 49’ 23”
162.79°
1.18°
Auriga

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

Finder chart Almaaz - ε Aurigae (epsilon Aurigae) star
Simplified finder chart for Almaaz - ε Aurigae (epsilon Aurigae).

Visibility of Almaaz from your location

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

Almaaz - ε Aurigae (epsilon Aurigae) is circumpolar and transits at 09:58 UTC (altitude: 82.3°)

Digitized Sky Survey image of Almaaz

The image below is a photograph of Almaaz 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 Almaaz is -0.001 arcsec per year in Right Ascension and -0.004 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of Almaaz - ε Aurigae (epsilon Aurigae) star
DSS2 image of Almaaz. The red arrow shows the motion of Almaaz during the next 100000 years (-1.67 arcmin in Right Ascension and -6.67 arcmin in declination);

Distance of Almaaz from the Sun and relative movement

Almaaz is distant 2,037.50 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

625.00 pc
2,037.50 ly
-3 km/s
-0.001 arcsec/year
-0.004 arcsec/year

Spectral properties of Almaaz

Almaaz belongs to spectral class F0 and has a luminosity class of I corresponding to a hypergiant star.

-5.99
F0I
6213K

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

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

Almaaz star system properties

Almaaz 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 Almaaz double sysyem:

2.99
9.19
6.2
207.6 arcsec

Alternative designations of Almaaz

Almaaz
ε Aurigae
(epsilon Aurigae)
SAO39955
SAO39955