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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
north SunriseRise: 7:43  
clear_day Transit: 11:47  
SunsetSet: 15:52 south
sunny DaytimeWhat's Visible Now?
All Constellations » Cassiopeia » 


Altitude: 31.1°   Azimuth: 31.9°   Direction: North-North-East

HR9020 is a sub-giant star in the constellation of Cassiopeia.

HR9020 visual magnitude is 6.33. Because of its reltive faintness, HR9020 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 HR9020:


HR9020 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 31.1°
Azimuth: 31.9°
Direction: North-North-East

Celestial coordinates and finder chart of HR9020

HR9020 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 HR9020 are provided in the following table:

23h 49m 12s
+58° 57’ 47”

The simplified sky map below shows the position of HR9020 in the sky:

Finder chart HR9020 star
Simplified finder chart for HR9020.

Visibility of HR9020 from your location

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

HR9020 is circumpolar and transits at 19:03 UTC (altitude: 82.5°)

Digitized Sky Survey image of HR9020

The image below is a photograph of HR9020 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 HR9020 is 0.038 arcsec per year in Right Ascension and -0.014 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR9020 star
DSS2 image of HR9020. The red arrow shows the motion of HR9020 during the next 10000 years (6.33 arcmin in Right Ascension and -2.33 arcmin in declination);

Distance of HR9020 from the Sun and relative movement

HR9020 is distant 249.81 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

76.63 pc
249.81 ly
30 km/s
0.038 arcsec/year
-0.014 arcsec/year

Spectral properties of HR9020

HR9020 belongs to spectral class F2 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR9020 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR9020. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR9020