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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:38  
clear_day Transit: 12:10  
SunsetSet: 17:43
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Coma Berenices » 


Altitude: 20.7°   Azimuth: 67.0°   Direction: East-North-East

HR4680 is a giant star in the constellation of Coma Berenices.

HR4680 visual magnitude is 6.23. Because of its reltive faintness, HR4680 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR4680 is 0.077 arcsec per year in Right Ascension and -0.116 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4680 star
DSS2 image of HR4680. The red arrow shows the motion of HR4680 during the next 1000 years (1.28 arcmin in Right Ascension and -1.93 arcmin in declination);

Key facts about HR4680


HR4680 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 20.7°
Azimuth: 67.0°
Direction: East-North-East

Celestial coordinates and finder chart of HR4680

HR4680 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4680 are provided in the following table:

12h 18m 31s
+30° 14’ 57”
Coma Berenices

The simplified sky map below shows the position of HR4680 in the sky:

Finder chart HR4680 star
Simplified finder chart for HR4680.

Visibility of HR4680 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR4680 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 59.8°
Max altitude: 68.8°
Azimuth: 300.2°

Distance of HR4680 from the Sun and relative movement

HR4680 is distant 180.51 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

55.37 pc
180.51 ly
-18 km/s
0.077 arcsec/year
-0.116 arcsec/year

Spectral properties of HR4680

HR4680 belongs to spectral class A9 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4680 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4680. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4680