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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:14 
Transit: 13:06 
Sunset: 20:58
sunny   (Daytime)   What's Visible Now?
All Constellations » Leo » 

45 Leonis

Above the horizon.  Rise: 8:30 | Tran: 15:17 | Set: 22:04
Alt: 18.58°   Az: 97.97°   Direction: East

45 Leonis is a variable and multiple hypergiant star of spectral class A0 in the constellation of Leo.

45 Leonis visual magnitude is 6.04. Because of its faintness, 45 Leonis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Image of 45 Leonis star
DSS2 image of 45 Leonis. The red arrow shows the motion of 45 Leonis during the next 100000 years (11.67 arcmin in Right Ascension and 3.33 arcmin in declination);

Celestial Coordinates

Apparent

10h 28m 56s
+09° 38’ 11”
19h 11m 10s
05h 40m 06s

J2000

10h 27m 38s
+09° 45’ 44”

Galactic Coordinates

233.13°
51.94°

Finder Chart

Finder chart 45 Leonis star
Simplified finder chart for 45 Leonis.

Magnitude, Color, Spectral Class

6.04
Hypergiant
45 Leonis is also a SiCr chemically peculiar star.

0.68
A0
10941K

The red dot in the diagram below shows where 45 Leonis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 45 Leonis. Attribution: Richard Powell / CC BY-SA

Star System Properties

45 Leonis 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 45 Leonis double sysyem:

6.04
12.34
6.3
37.2 arcsec

Distance, Radial Speed, Proper Motion

45 Leonis is distant 384.89 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

118.06
384.89
-8 km/s
0.007 arcsec/y
0.002"/y

Alternative Designations

SAO99136
SAO99136

Visibility from Your Location

Today's 45 Leonis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 80.4°
Max altitude: 48.2°
Azimuth: 279.6°