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public LocationGreenwich, United Kingdom
TimezoneEurope/London
Sunrise: 5:20 
Transit: 12:55 
Sunset: 20:30
wb_twilight   (Civil Twilight)   What's Visible Now?

HR233

Altitude: 48.0°   Azimuth: 40.0°   Direction: North-East

HR233 is a variable hypergiant star in the constellation of Cassiopeia.

HR233 visual magnitude is 5.39. Because of its reltive faintness, HR233 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR233 is 0.03 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR233 star
DSS2 image of HR233. The red arrow shows the motion of HR233 during the next 10000 years (5.00 arcmin in Right Ascension and -2.00 arcmin in declination);

Key facts about HR233

5.39
Hypergiant

HR233 is above the horizon from Greenwich, United Kingdom.

Altitude: 48.0°
Azimuth: 40.0°
Direction: North-East

Celestial coordinates and finder chart of HR233

HR233 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR233 are provided in the following table:

00h 50m 43s
+64° 14’ 51”
122.85°
1.38°
Cassiopeia

The simplified sky map below shows the position of HR233 in the sky:

Finder chart HR233 star
Simplified finder chart for HR233.

Visibility of HR233 from your location

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

HR233 is circumpolar and transits at 09:47 UTC (altitude: 77.2°)

Distance of HR233 from the Sun and relative movement

HR233 is distant 812.97 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

249.38 pc
812.97 ly
3 km/s
0.03 arcsec/year
-0.012 arcsec/year

Spectral properties of HR233

HR233 belongs to spectral class G0 and has a luminosity class of III corresponding to a hypergiant star.

-1.59
G0III
6435K

The red dot in the diagram below shows where HR233 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR233. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR233

SAO11424
SAO11424