31 Boötis

Below the horizon. Rise: 17:08 | Tran: 23:47 | Set: 6:30

Alt: -13.71° Az: 302.56° Direction: West-North-West

31 Boötis is a variable giant star of spectral class G7 in the constellation of Boötes.

31 Boötis visual magnitude is 4.86. Because of its moderate brightness, 31 Boötis 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 31 Boötis. The red arrow shows the motion of 31 Boötis during the next 100000 years (-15.00 arcmin in Right Ascension and 5.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 14h 42m 53s

Declination +08° 03’ 15”

Hour Angle 08h 16m 50s

Sidereal Time 22h 59m 44s

J2000

Right Ascension 14h 41m 38s

Declination +08° 09’ 42”

Galactic Coordinates

Galactic Longitude 2.05°

Galactic Latitude 57.76°

Finder Chart

Loading map...

Finder chart for 31 Boötis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.86

Class Giant

Absolute magnitude -1.38

Spectral Type G7III

Color Index (B-V) 1

Temperature 4743K

The red dot in the diagram below shows where 31 Boötis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 31 Boötis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

31 Boötis is distant 575.97 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

Distance (parsec) 176.68

Distance (light year) 575.97

Radial Speed -22 km/s

Proper Motion RA -0.009 arcsec/y

Proper Motion Dec 0.003"/y

Alternative Designations

Flamsteed designation 31 Boötis

Henry Draper Catalogue HD129312

SAO Catalogue SAO120601

Hipparcos Catalogue HIP71832

Durchmusterung Catalogue BD+08 2903

FK5 Catalogue 3163

General Catalogue of Variable Stars 6769

Visibility from Your Location

Today's 31 Boötis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 81.9° RISE 17:08

Max altitude: 46.6° TRANSIT 23:47

Azimuth: 278.1° SET 6:30

Set Location

Other stars in Boötes