ξ Boötis (xi Boötis)

Below the horizon. Rise: 15:25 | Tran: 22:22 | Set: 5:24

Alt: -23.99° Az: 38.57° Direction: South-South-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’ 50”

Hour Angle 14h 28m 10s

Sidereal Time 05h 20m 44s

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 Faro, Portugal are the following (all times relative to the local timezone Europe/Lisbon):

Azimuth: 71.0° RISE 15:25

Max altitude: 72.0° TRANSIT 22:22

Azimuth: 289.0° SET 5:24

Name:	Faro, Portugal
Latitude:	37° 1' 9.8" N
Longitude:	7° 55' 56.0" W
Timezone:	Europe/Lisbon

Set Location

Other stars in Boötes