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: 4:47  
clear_day Transit: 12:56  
SunsetSet: 21:06 south
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All Constellations » Cassiopeia » 


HR9052 is a variable hypergiant star in the constellation of Cassiopeia.

HR9052 visual magnitude is 6. Because of its reltive faintness, HR9052 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 HR9052:

HR9052 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 36°.

Celestial coordinates and finder chart of HR9052

HR9052 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 HR9052 are provided in the following table:

23h 55m 33s
+57° 24’ 43”

The simplified sky map below shows the position of HR9052 in the sky:

Finder chart HR9052 star
Simplified finder chart for HR9052.

Visibility of HR9052 from your location

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

HR9052 is circumpolar and transits at 07:09 UTC (altitude: 84.1°)

Digitized Sky Survey image of HR9052

The image below is a photograph of HR9052 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 HR9052 is -0.008 arcsec per year in Right Ascension and -0.003 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR9052 star
DSS2 image of HR9052. The red arrow shows the motion of HR9052 during the next 100000 years (-13.33 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR9052 from the Sun and relative movement

HR9052 is distant 32,600,000.00 light years from the Sun and it is moving towards the Sun at the speed of 26 kilometers per second.

10,000,000.00 pc
32,600,000.00 ly
-26 km/s
-0.008 arcsec/year
-0.003 arcsec/year

Spectral properties of HR9052

HR9052 belongs to spectral class B0 and has a luminosity class of II corresponding to a hypergiant star.


The red dot in the diagram below shows where HR9052 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR9052. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR9052