20 Boötis

Below the horizon. Rise: 14:19 | Tran: 21:47 | Set: 5:19

Alt: -19.70° Az: 344.31° Direction: North-North-West

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

20 Boötis visual magnitude is 4.86. Because of its moderate brightness, 20 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 20 Boötis. The red arrow shows the motion of 20 Boötis during the next 1000 years (-2.37 arcmin in Right Ascension and 1.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 14h 20m 57s

Declination +16° 11’ 27”

Hour Angle 10h 58m 29s

Sidereal Time 01h 19m 27s

J2000

Right Ascension 14h 19m 45s

Declination +16° 18’ 24”

Galactic Coordinates

Galactic Longitude 9.59°

Galactic Latitude 66.86°

Finder Chart

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Finder chart for 20 Boötis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.86

Class Giant

Absolute magnitude 1.03

Spectral Type K3III

Color Index (B-V) 1.23

Temperature 4251K

The red dot in the diagram below shows where 20 Boötis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 20 Boötis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

20 Boötis is distant 190.42 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 58.41

Distance (light year) 190.42

Radial Speed -8 km/s

Proper Motion RA -0.142 arcsec/y

Proper Motion Dec 0.06"/y

Alternative Designations

Flamsteed designation 20 Boötis

Henry Draper Catalogue HD125560

SAO Catalogue SAO100980

Hipparcos Catalogue HIP70027

Durchmusterung Catalogue BD+16 2637

FK5 Catalogue 3135

General Catalogue of Variable Stars 6631

Visibility from Your Location

Today's 20 Boötis rise, transit and set times from Carlow, Ireland are the following (all times relative to the local timezone Europe/Dublin):

Azimuth: 73.8° RISE 14:19

Max altitude: 53.4° TRANSIT 21:47

Azimuth: 286.2° SET 5:19

Name:	Carlow, Ireland
Latitude:	52° 50' 26.9" N
Longitude:	6° 55' 34.0" W
Timezone:	Europe/Dublin

Set Location

Other stars in Boötes