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public LocationGreenwich, UK
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
wb_twilight   (Civil Twilight)   What's Visible Now?
All Constellations » Leo » 

Rasalas - μ Leonis (mu Leonis)

Below the horizon.  Rise: 8:07 | Tran: 16:35 | Set: 1:08
Altitude: -12.3°   Azimuth: 354.5°   Direction: North

Rasalas, also designated as μ Leonis (mu Leonis), is a giant star of spectral class K2 in the constellation of Leo.

Rasalas visual magnitude is 3.88. Because of its moderate brightness, Rasalas 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 Rasalas

Finder chart Rasalas - μ Leonis (mu Leonis) star
Simplified finder chart for Rasalas - μ Leonis (mu Leonis).

Rasalas 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 Rasalas are provided in the following table:

09h 52m 45s
+26° 00’ 24”
Image of Rasalas - μ Leonis (mu Leonis) star
DSS2 image of Rasalas. The red arrow shows the motion of Rasalas during the next 1000 years (-3.60 arcmin in Right Ascension and -0.93 arcmin in declination);

Key facts about Rasalas


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


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

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

Distance of Rasalas from the Sun and relative movement

Rasalas is distant 132.95 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.

40.78 pc
132.95 ly
14 km/s
-0.216 arcsec/year
-0.056 arcsec/year

Alternative designations of Rasalas

μ Leonis
(mu Leonis)

Visibility of Rasalas from your location

Today's Rasalas - μ Leonis (mu Leonis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 64.0°
Max altitude: 64.5°
Azimuth: 296.0°