9 Boötis

Below the horizon. Rise: 14:11 | Tran: 22:50 | Set: 7:34

Alt: -9.59° Az: 343.90° Direction: North-North-West

9 Boötis is a variable giant star of spectral class K3 in the constellation of Boötes.

9 Boötis visual magnitude is 5.01. Because of its faintness, 9 Boötis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of 9 Boötis. The red arrow shows the motion of 9 Boötis during the next 10000 years (4.67 arcmin in Right Ascension and -8.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 13h 57m 43s

Declination +27° 22’ 07”

Hour Angle 10h 48m 15s

Sidereal Time 00h 45m 59s

J2000

Right Ascension 13h 56m 34s

Declination +27° 29’ 30”

Galactic Coordinates

Galactic Longitude 38.12°

Galactic Latitude 75.54°

Finder Chart

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Finder chart for 9 Boötis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.01

Class Giant

Absolute magnitude -1.48

Spectral Type K3III

Color Index (B-V) 1.42

Temperature 3918K

The red dot in the diagram below shows where 9 Boötis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 9 Boötis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

9 Boötis is distant 648.11 light years from the Sun and it is moving towards the Sun at the speed of 40 kilometers per second.

Distance (parsec) 198.81

Distance (light year) 648.11

Radial Speed -40 km/s

Proper Motion RA 0.028 arcsec/y

Proper Motion Dec -0.048"/y

Alternative Designations

Flamsteed designation 9 Boötis

Henry Draper Catalogue HD121710

SAO Catalogue SAO83084

Hipparcos Catalogue HIP68103

Durchmusterung Catalogue BD+28 2278

General Catalogue of Variable Stars 6502

Visibility from Your Location

Today's 9 Boötis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 62.6° RISE 14:11

Max altitude: 65.9° TRANSIT 22:50

Azimuth: 297.4° SET 7:34

Set Location

Other stars in Boötes