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: 6:54  
clear_day Transit: 12:49  
SunsetSet: 18:43 south
sunny DaytimeWhat's Visible Now
All Constellations » Lacerta » 


Altitude: 23.5°   Azimuth: 330.1°   Direction: North-North-West

HR8633 is a hypergiant star in the constellation of Lacerta.

HR8633 visual magnitude is 5.93. Because of its reltive faintness, HR8633 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 HR8633:


HR8633 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 23.5°
Azimuth: 330.1°
Direction: North-North-West

Celestial coordinates and finder chart of HR8633

HR8633 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 HR8633 are provided in the following table:

22h 40m 18s
+53° 50’ 45”

The simplified sky map below shows the position of HR8633 in the sky:

Finder chart HR8633 star
Simplified finder chart for HR8633.

Visibility of HR8633 from your location

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

HR8633 is circumpolar and transits at 22:10 UTC (altitude: 87.6°)

Digitized Sky Survey image of HR8633

The image below is a photograph of HR8633 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 HR8633 is 0.001 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 HR8633 star
DSS2 image of HR8633. The red arrow shows the motion of HR8633 during the next 10000 years (0.17 arcmin in Right Ascension and -2.33 arcmin in declination);

Distance of HR8633 from the Sun and relative movement

HR8633 is distant 343.52 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

105.37 pc
343.52 ly
-6 km/s
0.001 arcsec/year
-0.014 arcsec/year

Spectral properties of HR8633

HR8633 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR8633 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR8633. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8633