Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:49  
clear_day Transit: 12:56  
SunsetSet: 21:04 south
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All Constellations » Cassiopeia » 


HR8778 is a sub-giant star in the constellation of Cassiopeia.

HR8778 visual magnitude is 6.43. Because of its reltive faintness, HR8778 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR8778:

HR8778 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 79°.

Celestial coordinates and finder chart of HR8778

HR8778 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 HR8778 are provided in the following table:

23h 03m 21s
+58° 33’ 52”

The simplified sky map below shows the position of HR8778 in the sky:

Finder chart HR8778 star
Simplified finder chart for HR8778.

Visibility of HR8778 from your location

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

HR8778 is circumpolar and transits at 06:25 UTC (altitude: 82.9°)

Digitized Sky Survey image of HR8778

The image below is a photograph of HR8778 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR8778 is 0.067 arcsec per year in Right Ascension and 0.017 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8778 star
DSS2 image of HR8778. The red arrow shows the motion of HR8778 during the next 10000 years (11.17 arcmin in Right Ascension and 2.83 arcmin in declination);

Distance of HR8778 from the Sun and relative movement

HR8778 is distant 286.22 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

87.80 pc
286.22 ly
15 km/s
0.067 arcsec/year
0.017 arcsec/year

Spectral properties of HR8778

HR8778 belongs to spectral class G8 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR8778 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8778. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8778