30 Comae Berenices

Above the horizon. Rise: 3:44 | Tran: 12:24 | Set: 21:04

Alt: 5.02° Az: 50.82° Direction: North-East

30 Comae Berenices is a double main-sequence star of spectral class A2 in the constellation of Coma Berenices.

30 Comae Berenices visual magnitude is 5.78. Because of its faintness, 30 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 30 Comae Berenices. The red arrow shows the motion of 30 Comae Berenices during the next 1000 years (-1.60 arcmin in Right Ascension and 0.35 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 50m 29s

Declination +27° 25’ 03”

Hour Angle 16h 01m 45s

Sideral Time 04h 52m 15s

J2000

Right Ascension 12h 49m 17s

Declination +27° 33’ 07”

Galactic Coordinates

Galactic Longitude 171.1°

Galactic Latitude 89.36°

Finder Chart

Simplified finder chart for 30 Comae Berenices.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.78

Class Main-sequence

Absolute magnitude 0.77

Spectral Type A2V

Color Index (B-V) 0.03

Temperature 9766K

The red dot in the diagram below shows where 30 Comae Berenices is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 30 Comae Berenices. Attribution: Richard Powell / CC BY-SA

Star System Properties

30 Comae Berenices is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 30 Comae Berenices double sysyem:

Main star magnitude 5.78

Secondary star magnitude 12.78

Magnitude difference 7

Separation 42.5 arcsec

Distance, Radial Speed, Proper Motion

30 Comae Berenices is distant 326.98 light years from the Sun

Distance (parsec) 100.30

Distance (light year) 326.98

Proper Motion RA -0.096 arcsec/y

Proper Motion Dec 0.021"/y

Alternative Designations

Flamsteed designation 30 Comae Berenices

Henry Draper Catalogue HD111469

SAO Catalogue SAO82515

Hipparcos Catalogue HIP62576

Durchmusterung Catalogue BD+28 2153

Aitken Double Star Catalogue ADS8674

Visibility from Your Location

Today's 30 Comae Berenices rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 62.6° RISE 3:44

Max altitude: 65.9° TRANSIT 12:24

Azimuth: 297.4° SET 21:04

Set Location

Other stars in Coma Berenices