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public LocationGreenwich, UK
Sunrise: 5:07 
Transit: 13:06 
Sunset: 21:04
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Cassiopeia » 


Above the horizon.  Circumpolar today
Alt: 78.22°   Az: 60.56°   Direction: East-North-East

HR9000 is a giant star of spectral class G4 in the constellation of Cassiopeia.

HR9000 visual magnitude is 6.51. Because of its faintness, HR9000 is not visible to the naked eye.

HR9000 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere.

Image of HR9000 star
DSS2 image of HR9000. The red arrow shows the motion of HR9000 during the next 10000 years (3.33 arcmin in Right Ascension and -0.83 arcmin in declination);

Celestial Coordinates


23h 46m 00s
+55° 56’ 09”
22h 45m 56s
22h 31m 57s


23h 44m 48s
+55° 47’ 58”

Galactic Coordinates


Finder Chart

Finder chart HR9000 star
Simplified finder chart for HR9000.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where HR9000 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR9000. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR9000 is distant 473.15 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

145.14 pc
473.15 ly
9 km/s
0.02 arcsec/y
-0.005 "/y

Alternative Designations


Visibility from Your Location

HR9000 is circumpolar and transits at 03:56 UTC (altitude: 85.5°)