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public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:16
wb_twilight   (Civil Twilight)   What's Visible Now?

Alzirr - ξ Geminorum (xi Geminorum)

Below the horizon.  Rise: 7:03 | Tran: 14:08 | Set: 21:12
Altitude: -18.4°   Azimuth: 37.2°   Direction: North-East

Alzirr, also designated as ξ Geminorum (xi Geminorum), is a variable giant star of spectral class F5 in the constellation of Gemini.

Alzirr visual magnitude is 3.36. Because of its moderate brightness, Alzirr is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Celestial coordinates and finder chart of Alzirr

Finder chart Alzirr - ξ Geminorum (xi Geminorum) star
Simplified finder chart for Alzirr - ξ Geminorum (xi Geminorum).

Alzirr 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 Alzirr are provided in the following table:

06h 45m 17s
+12° 53’ 44”
Image of Alzirr - ξ Geminorum (xi Geminorum) star
DSS2 image of Alzirr. The red arrow shows the motion of Alzirr during the next 1000 years (-1.93 arcmin in Right Ascension and -3.18 arcmin in declination);

Key facts about Alzirr


and has a luminosity class of III corresponding to a giant star.


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

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

Distance of Alzirr from the Sun and relative movement

Alzirr is distant 57.17 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

17.54 pc
57.17 ly
25 km/s
-0.116 arcsec/year
-0.191 arcsec/year

Alternative designations of Alzirr

ξ Geminorum
(xi Geminorum)
31 Geminorum

Visibility of Alzirr from your location

Today's Alzirr - ξ Geminorum (xi Geminorum) rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):

Azimuth: 77.1°
Max altitude: 51.4°
Azimuth: 282.9°