39 Leonis

Below the horizon. Rise: 10:42 | Tran: 18:48 | Set: 2:58

Alt: -3.19° Az: 314.26° Direction: North-West

39 Leonis is a double main-sequence star of spectral class F8 in the constellation of Leo.

39 Leonis visual magnitude is 5.82. Because of its faintness, 39 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.

DSS2 image of 39 Leonis. The red arrow shows the motion of 39 Leonis during the next 1000 years (-6.80 arcmin in Right Ascension and -1.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 18m 38s

Declination +22° 58’ 42”

Hour Angle 08h 36m 09s

Sidereal Time 18h 54m 48s

J2000

Right Ascension 10h 17m 14s

Declination +23° 06’ 21”

Galactic Coordinates

Galactic Longitude 210.81°

Galactic Latitude 55.01°

Finder Chart

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Finder chart for 39 Leonis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.82

Class Main-sequence

Absolute magnitude 4.04

Spectral Type F8V

Color Index (B-V) 0.5

Temperature 6389K

The red dot in the diagram below shows where 39 Leonis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 39 Leonis. Attribution: Richard Powell / CC BY-SA

Star System Properties

39 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 39 Leonis double sysyem:

Main star magnitude 5.82

Secondary star magnitude 11.82

Magnitude difference 6

Separation 7.6 arcsec

Distance, Radial Speed, Proper Motion

39 Leonis is distant 74.07 light years from the Sun and it is moving far from the Sun at the speed of 38 kilometers per second.

Distance (parsec) 22.72

Distance (light year) 74.07

Radial Speed 38 km/s

Proper Motion RA -0.408 arcsec/y

Proper Motion Dec -0.1"/y

Alternative Designations

Flamsteed designation 39 Leonis

Henry Draper Catalogue HD89125

SAO Catalogue SAO81270

Hipparcos Catalogue HIP50384

Durchmusterung Catalogue BD+23 2207

Gliese Catalogue Gl 387 A

Aitken Double Star Catalogue ADS7712

Visibility from Your Location

Today's 39 Leonis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 67.0° RISE 10:42

Max altitude: 61.5° TRANSIT 18:48

Azimuth: 293.0° SET 2:58

Set Location

Other stars in Leo