15 Boötis

Above the horizon. Rise: 14:18 | Tran: 20:57 | Set: 3:32

Alt: 28.13° Az: 102.97° Direction: South-South-West

15 Boötis is a double giant star of spectral class K1 in the constellation of Boötes.

15 Boötis visual magnitude is 5.29. Because of its faintness, 15 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 15 Boötis. The red arrow shows the motion of 15 Boötis during the next 1000 years (-0.47 arcmin in Right Ascension and -2.78 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 14h 16m 05s

Declination +09° 58’ 58”

Hour Angle 19h 56m 57s

Sidereal Time 10h 13m 03s

J2000

Right Ascension 14h 14m 50s

Declination +10° 06’ 02”

Galactic Coordinates

Galactic Longitude 356°

Galactic Latitude 64°

Finder Chart

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Finder chart for 15 Boötis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.29

Class Giant

Absolute magnitude 0.82

Spectral Type K1III

Color Index (B-V) 1

Temperature 4743K

The red dot in the diagram below shows where 15 Boötis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 15 Boötis. Attribution: Richard Powell / CC BY-SA

Star System Properties

15 Boötis is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 15 Boötis double sysyem:

Main star magnitude 5.29

Secondary star magnitude 7.89

Magnitude difference 2.6

Separation 1.1 arcsec

Distance, Radial Speed, Proper Motion

15 Boötis is distant 254.89 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

Distance (parsec) 78.19

Distance (light year) 254.89

Radial Speed 17 km/s

Proper Motion RA -0.028 arcsec/y

Proper Motion Dec -0.167"/y

Alternative Designations

Flamsteed designation 15 Boötis

Henry Draper Catalogue HD124679

SAO Catalogue SAO100934

Hipparcos Catalogue HIP69612

Durchmusterung Catalogue BD+10 2654

FK5 Catalogue 3131

Visibility from Your Location

Today's 15 Boötis rise, transit and set times from Lunenburg, United States are the following (all times relative to the local timezone America/New_York):

Azimuth: 80.0° RISE 14:18

Max altitude: 57.4° TRANSIT 20:57

Azimuth: 280.0° SET 3:32

Name:	Lunenburg, United States
Latitude:	42° 35' 40.2" N
Longitude:	71° 43' 28.2" W
Timezone:	America/New_York

Set Location

Other stars in Boötes