55 Leonis

Below the horizon. Rise: 6:12 | Tran: 12:13 | Set: 18:14

Alt: -26.04° Az: 309.25° Direction: North-West

55 Leonis is a multiple giant star of spectral class F2 in the constellation of Leo.

55 Leonis visual magnitude is 5.91. Because of its faintness, 55 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 55 Leonis. The red arrow shows the motion of 55 Leonis during the next 1000 years (1.77 arcmin in Right Ascension and 0.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 56m 58s

Declination +00° 36’ 16”

Hour Angle 09h 03m 37s

Sideral Time 20h 00m 36s

J2000

Right Ascension 10h 55m 42s

Declination +00° 44’ 12”

Galactic Coordinates

Galactic Longitude 251.63°

Galactic Latitude 51.69°

Finder Chart

Simplified finder chart for 55 Leonis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.91

Class Giant

Absolute magnitude 2.70

Spectral Type F2III

Color Index (B-V) 0.42

Temperature 6776K

The red dot in the diagram below shows where 55 Leonis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 55 Leonis. Attribution: Richard Powell / CC BY-SA

Star System Properties

55 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 55 Leonis double sysyem:

Main star magnitude 5.91

Secondary star magnitude 7.91

Magnitude difference 2

Separation 0 arcsec

Distance, Radial Speed, Proper Motion

55 Leonis is distant 142.67 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

Distance (parsec) 43.76

Distance (light year) 142.67

Radial Speed -2 km/s

Proper Motion RA 0.106 arcsec/y

Alternative Designations

Flamsteed designation 55 Leonis

Henry Draper Catalogue HD94672

SAO Catalogue SAO118574

Hipparcos Catalogue HIP53423

Durchmusterung Catalogue BD+01 2501

Aitken Double Star Catalogue ADS7982

Visibility from Your Location

Today's 55 Leonis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 89.4° RISE 6:12

Max altitude: 39.1° TRANSIT 12:13

Azimuth: 270.6° SET 18:14

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Leo