42 Leonis

Below the horizon. Rise: 12:24 | Tran: 19:40 | Set: 2:59

Alt: -22.64° Az: 345.86° Direction: North-North-West

42 Leonis is a variable main-sequence star of spectral class A1 in the constellation of Leo.

42 Leonis visual magnitude is 6.12. Because of its faintness, 42 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 42 Leonis. The red arrow shows the motion of 42 Leonis during the next 10000 years (-5.83 arcmin in Right Ascension and -2.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 23m 12s

Declination +14° 50’ 48”

Hour Angle 11h 06m 01s

Sidereal Time 21h 29m 13s

J2000

Right Ascension 10h 21m 50s

Declination +14° 58’ 32”

Galactic Coordinates

Galactic Longitude 224.49°

Galactic Latitude 53.21°

Finder Chart

Loading map...

Finder chart for 42 Leonis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.12

Class Main-sequence

Absolute magnitude 0.30

Spectral Type A1V

Color Index (B-V) 0.02

Temperature 9882K

The red dot in the diagram below shows where 42 Leonis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 42 Leonis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

42 Leonis is distant 475.91 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

Distance (parsec) 145.99

Distance (light year) 475.91

Radial Speed 9 km/s

Proper Motion RA -0.035 arcsec/y

Proper Motion Dec -0.015"/y

Alternative Designations

Flamsteed designation 42 Leonis

Henry Draper Catalogue HD89774

SAO Catalogue SAO99080

Hipparcos Catalogue HIP50755

Durchmusterung Catalogue BD+15 2192

General Catalogue of Variable Stars 4828

Visibility from Your Location

Today's 42 Leonis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 75.2° RISE 12:24

Max altitude: 53.4° TRANSIT 19:40

Azimuth: 284.8° SET 2:59

Set Location

Other stars in Leo