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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: 7:03  
clear_day Transit: 12:12  
SunsetSet: 17:22
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Coma Berenices » 


Altitude: -7.6°   Azimuth: 33.5°   Direction: North-North-East

HR5102 is a double giant star in the constellation of Coma Berenices.

HR5102 visual magnitude is 6.11. Because of its reltive faintness, HR5102 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR5102 is 0.049 arcsec per year in Right Ascension and -0.206 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR5102 star
DSS2 image of HR5102. The red arrow shows the motion of HR5102 during the next 1000 years (0.82 arcmin in Right Ascension and -3.43 arcmin in declination);

Key facts about HR5102


HR5102 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -7.6°
Azimuth: 33.5°
Direction: North-North-East

Celestial coordinates and finder chart of HR5102

HR5102 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR5102 are provided in the following table:

13h 32m 48s
+24° 20’ 47”
Coma Berenices

The simplified sky map below shows the position of HR5102 in the sky:

Finder chart HR5102 star
Simplified finder chart for HR5102.

Visibility of HR5102 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 HR5102 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: 65.7°
Max altitude: 62.9°
Azimuth: 294.3°

Distance of HR5102 from the Sun and relative movement

HR5102 is distant 469.74 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

144.09 pc
469.74 ly
6 km/s
0.049 arcsec/year
-0.206 arcsec/year

Spectral properties of HR5102

HR5102 belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR5102 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR5102. Attribution: Richard Powell / CC BY-SA

HR5102 star system properties

HR5102 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 HR5102 double sysyem:

1.5 arcsec

Alternative designations of HR5102