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: 4:43  
clear_day Transit: 12:58  
SunsetSet: 21:12 south
sunny DaytimeWhat's Visible Now
All Constellations » Cygnus » 


Altitude: 34.2°   Azimuth: 323.9°   Direction: North-West

HR7633 is a bright giant star in the constellation of Cygnus.

HR7633 visual magnitude is 4.96. Because of its moderate brightness, HR7633 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR7633:

Bright giant

HR7633 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 34.2°
Azimuth: 323.9°
Direction: North-West

Celestial coordinates and finder chart of HR7633

HR7633 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 HR7633 are provided in the following table:

19h 55m 55s
+58° 50’ 45”

The simplified sky map below shows the position of HR7633 in the sky:

Finder chart HR7633 star
Simplified finder chart for HR7633.

Visibility of HR7633 from your location

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

HR7633 is circumpolar and transits at 02:43 UTC (altitude: 82.6°)

Digitized Sky Survey image of HR7633

The image below is a photograph of HR7633 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 HR7633 is -0.009 arcsec per year in Right Ascension and -0.019 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7633 star
DSS2 image of HR7633. The red arrow shows the motion of HR7633 during the next 10000 years (-1.50 arcmin in Right Ascension and -3.17 arcmin in declination);

Distance of HR7633 from the Sun and relative movement

HR7633 is distant 918.31 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

281.69 pc
918.31 ly
5 km/s
-0.009 arcsec/year
-0.019 arcsec/year

Spectral properties of HR7633

HR7633 belongs to spectral class K5 and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where HR7633 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7633. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7633