HR4642

Above the horizon. Rise: 12:22 | Tran: 21:10 | Set: 6:02

Alt: 57.50° Az: 236.57° Direction: West-South-West

HR4642 is a main-sequence star of spectral class F5 in the constellation of Coma Berenices.

HR4642 visual magnitude is 6.49. Because of its faintness, HR4642 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 HR4642. The red arrow shows the motion of HR4642 during the next 1000 years (1.62 arcmin in Right Ascension and -1.18 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 13m 18s

Declination +28° 23’ 41”

Hour Angle 02h 02m 34s

Sidereal Time 14h 15m 53s

J2000

Right Ascension 12h 12m 01s

Declination +28° 32’ 09”

Galactic Coordinates

Galactic Longitude 201.47°

Galactic Latitude 81.17°

Finder Chart

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Finder chart for HR4642.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.49

Class Main-sequence

Absolute magnitude 1.96

Spectral Type F5V

Color Index (B-V) 0.36

Temperature 7101K

The red dot in the diagram below shows where HR4642 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4642. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR4642 is distant 262.90 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

Distance (parsec) 80.65

Distance (light year) 262.90

Radial Speed -15 km/s

Proper Motion RA 0.097 arcsec/y

Proper Motion Dec -0.071"/y

Alternative Designations

Henry Draper Catalogue HD106022

SAO Catalogue SAO82181

Hipparcos Catalogue HIP59489

Durchmusterung Catalogue BD+29 2265

Visibility from Your Location

Today's HR4642 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 61.6° RISE 12:22

Max altitude: 66.9° TRANSIT 21:10

Azimuth: 298.4° SET 6:02

Set Location

Other stars in Coma Berenices