ξ Boötis (xi Boötis)

Above the horizon. Rise: 16:33 | Tran: 22:52 | Set: 5:15

Alt: 73.86° Az: 287.20° Direction: West-North-West

ξ Boötis is a variable and multiple main-sequence star of spectral class G8 in the constellation of Boötes.

ξ Boötis visual magnitude is 4.55. Because of its moderate brightness, ξ 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 ξ Boötis. The red arrow shows the motion of ξ Boötis during the next 1000 years (2.28 arcmin in Right Ascension and -1.63 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 14h 52m 33s

Declination +18° 59’ 51”

Hour Angle 01h 05m 13s

Sidereal Time 15h 57m 47s

J2000

Right Ascension 14h 51m 23s

Declination +19° 06’ 03”

Galactic Coordinates

Galactic Longitude 23.09°

Galactic Latitude 61.36°

Finder Chart

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Finder chart for ξ Boötis (xi Boötis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.55

Class Main-sequence

Absolute magnitude 5.42

Spectral Type G8V

Color Index (B-V) 0.76

Temperature 5404K

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

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

Star System Properties

ξ Boötis is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the ξ Boötis double sysyem:

Main star magnitude 4.55

Secondary star magnitude 6.65

Magnitude difference 2.1

Separation 7.2 arcsec

Distance, Radial Speed, Proper Motion

ξ Boötis is distant 21.84 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 6.70

Distance (light year) 21.84

Radial Speed 3 km/s

Proper Motion RA 0.137 arcsec/y

Proper Motion Dec -0.098"/y

Alternative Designations

Bayer designation ξ Boötis
(xi Boötis)

Flamsteed designation 37 Boötis

Henry Draper Catalogue HD131156

SAO Catalogue SAO101250

Hipparcos Catalogue HIP72659

Durchmusterung Catalogue BD+19 2870

Gliese Catalogue Gl 566 A

General Catalogue of Variable Stars Xi Boo

Aitken Double Star Catalogue ADS9413

Visibility from Your Location

Today's ξ Boötis (xi Boötis) rise, transit and set times from Adi Keyh, Eritrea are the following (all times relative to the local timezone Africa/Asmara):

Azimuth: 71.0° RISE 16:33

Max altitude: 85.8° TRANSIT 22:52

Azimuth: 289.0° SET 5:15

Name:	Adi Keyh, Eritrea
Latitude:	14° 50' 39.8" N
Longitude:	39° 22' 37.9" E
Timezone:	Africa/Asmara

Set Location

Other stars in Boötes