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public LocationGreenwich, UK
Sunrise: 4:57 
Transit: 13:04 
Sunset: 21:10
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Leo » 

40 Leonis

Above the horizon.  Rise: 8:12 | Tran: 15:55 | Set: 23:38
Altitude: 7.8°   Azimuth: 291.7°   Direction: West-North-West

40 Leonis is a variable sub-giant star of spectral class F6 in the constellation of Leo.

40 Leonis visual magnitude is 4.79. Because of its moderate brightness, 40 Leonis 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.

40 Leonis is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year.

Image of 40 Leonis star
DSS2 image of 40 Leonis. The red arrow shows the motion of 40 Leonis during the next 1000 years (-3.90 arcmin in Right Ascension and -3.57 arcmin in declination);

Apparent Coordinates

10h 21m 04s
+19° 20’ 49”

J2000 Coordinates

10h 19m 44s
+19° 28’ 14”

Galactic Coordinates


Finder Chart

Finder chart 40 Leonis star
Simplified finder chart for 40 Leonis.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where 40 Leonis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 40 Leonis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

40 Leonis is distant 69.01 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

21.17 pc
69.01 ly
7 km/s
-0.234 arcsec/y
-0.214 "/y

Alternative Designations

Gl 388.1

Visibility from Your Location

Today's 40 Leonis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 70.5°
Max altitude: 58.0°
Azimuth: 289.5°