υ Boötis (upsilon Boötis)

Above the horizon. Rise: 15:35 | Tran: 22:55 | Set: 6:19

Alt: 41.96° Az: 236.89° Direction: West-South-West

υ Boötis is a variable giant star of spectral class K5 in the constellation of Boötes.

υ Boötis visual magnitude is 4.07. Because of its moderate brightness, υ 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 υ Boötis. The red arrow shows the motion of υ Boötis during the next 1000 years (-1.58 arcmin in Right Ascension and 0.70 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 13h 50m 42s

Declination +15° 40’ 20”

Hour Angle 02h 41m 13s

Sidereal Time 16h 31m 55s

J2000

Right Ascension 13h 49m 28s

Declination +15° 47’ 52”

Galactic Coordinates

Galactic Longitude 355.81°

Galactic Latitude 72.4°

Finder Chart

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Finder chart for υ Boötis (upsilon Boötis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.07

Class Giant

Absolute magnitude -0.31

Spectral Type K5III

Color Index (B-V) 1.52

Temperature 3764K

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

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

Distance, Radial Speed, Proper Motion

υ Boötis is distant 245.30 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 75.24

Distance (light year) 245.30

Radial Speed -6 km/s

Proper Motion RA -0.095 arcsec/y

Proper Motion Dec 0.042"/y

Alternative Designations

Bayer designation υ Boötis
(upsilon Boötis)

Flamsteed designation 5 Boötis

Henry Draper Catalogue HD120477

SAO Catalogue SAO100725

Hipparcos Catalogue HIP67459

Durchmusterung Catalogue BD+16 2564

General Catalogue of Variable Stars 6458

Visibility from Your Location

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

Azimuth: 74.3° RISE 15:35

Max altitude: 54.2° TRANSIT 22:55

Azimuth: 285.7° SET 6:19

Set Location

Other stars in Boötes