20 Comae Berenices

Above the horizon. Rise: 12:41 | Tran: 19:54 | Set: 3:11

Alt: 14.52° Az: 74.91° Direction: South-West

20 Comae Berenices is a main-sequence star of spectral class A3 in the constellation of Coma Berenices.

20 Comae Berenices visual magnitude is 5.69. Because of its faintness, 20 Comae Berenices 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 20 Comae Berenices. The red arrow shows the motion of 20 Comae Berenices during the next 10000 years (4.00 arcmin in Right Ascension and -5.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 30m 59s

Declination +20° 45’ 19”

Hour Angle 18h 06m 54s

Sidereal Time 06h 37m 54s

J2000

Right Ascension 12h 29m 43s

Declination +20° 53’ 45”

Galactic Coordinates

Galactic Longitude 263.27°

Galactic Latitude 82.04°

Finder Chart

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Finder chart for 20 Comae Berenices.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.69

Class Main-sequence

Absolute magnitude 1.23

Spectral Type A3V

Color Index (B-V) 0.07

Temperature 9328K

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

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

Distance, Radial Speed, Proper Motion

20 Comae Berenices is distant 253.89 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

Distance (parsec) 77.88

Distance (light year) 253.89

Radial Speed -5 km/s

Proper Motion RA 0.024 arcsec/y

Proper Motion Dec -0.032"/y

Alternative Designations

Flamsteed designation 20 Comae Berenices

Henry Draper Catalogue HD108765

SAO Catalogue SAO82336

Hipparcos Catalogue HIP60957

Durchmusterung Catalogue BD+21 2424

FK5 Catalogue 466

Visibility from Your Location

Today's 20 Comae Berenices rise, transit and set times from Lei, Italy are the following (all times relative to the local timezone Europe/Rome):

Azimuth: 69.2° RISE 12:41

Max altitude: 70.4° TRANSIT 19:54

Azimuth: 290.8° SET 3:11

Name:	Lei, Italy
Latitude:	40° 18' 23.0" N
Longitude:	8° 55' 6.9" E
Timezone:	Europe/Rome

Set Location

Other stars in Coma Berenices