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

Rasalas - μ Leonis (mu Leonis)

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

Rasalas visual magnitude is 3.88. Because of its moderate brightness, Rasalas should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about Rasalas:

3.88
Giant
Rasalas - μ Leonis (mu Leonis) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 27°.

Celestial coordinates and finder chart of Rasalas

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”
204.05°
50.25°
Leo

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

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

Visibility of Rasalas from your location

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

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

Azimuth: 64.0°
Max altitude: 64.5°
Azimuth: 296.0°
Rasalas - μ Leonis (mu Leonis) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Rasalas

The image below is a photograph of Rasalas 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 Rasalas is -0.216 arcsec per year in Right Ascension and -0.056 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

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);

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

Spectral properties of Rasalas

Rasalas belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.

0.83
K2III
4270K

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

Alternative designations of Rasalas

Rasalas
μ Leonis
(mu Leonis)
SAO81064
SAO81064