42 Librae

Below the horizon. Rise: 13:13 | Tran: 16:57 | Set: 20:40

Alt: -56.23° Az: 44.89° Direction: North-East

42 Librae is a giant star of spectral class K3 in the constellation of Libra.

42 Librae visual magnitude is 4.96. Because of its moderate brightness, 42 Librae 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.

DSS2 image of 42 Librae. The red arrow shows the motion of 42 Librae during the next 10000 years (-2.17 arcmin in Right Ascension and -2.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 41m 44s

Declination -23° 53’ 47”

Hour Angle 13h 41m 38s

Sideral Time 05h 23m 23s

J2000

Right Ascension 15h 40m 16s

Declination -23° 49’ 05”

Galactic Coordinates

Galactic Longitude 345.53°

Galactic Latitude 24.77°

Finder Chart

Simplified finder chart for 42 Librae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.96

Class Giant

Absolute magnitude -0.38

Spectral Type K3III

Color Index (B-V) 1.33

Temperature 4069K

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

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

Distance, Radial Speed, Proper Motion

42 Librae is distant 381.29 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

Distance (parsec) 116.96

Distance (light year) 381.29

Radial Speed -22 km/s

Proper Motion RA -0.013 arcsec/y

Proper Motion Dec -0.012"/y

Alternative Designations

Flamsteed designation 42 Librae

Henry Draper Catalogue HD139663

SAO Catalogue SAO183686

Hipparcos Catalogue HIP76742

Durchmusterung Catalogue CD-2312458

FK5 Catalogue 3239

Visibility from Your Location

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

Azimuth: 113.9° RISE 13:13

Max altitude: 14.6° TRANSIT 16:57

Azimuth: 246.1° SET 20:40

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

Location

Other stars in Libra