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: 6:43  
clear_day Transit: 12:51  
SunsetSet: 18:59 south
sunny DaytimeWhat's Visible Now
All Constellations » Cassiopeia » 


Altitude: 29.1°   Azimuth: 12.7°   Direction: North-North-East

HR747 is a giant star in the constellation of Cassiopeia.

HR747 visual magnitude is 5.78. Because of its reltive faintness, HR747 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 HR747:


HR747 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 29.1°
Azimuth: 12.7°
Direction: North-North-East

Celestial coordinates and finder chart of HR747

HR747 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 HR747 are provided in the following table:

02h 37m 36s
+65° 44’ 44”

The simplified sky map below shows the position of HR747 in the sky:

Finder chart HR747 star
Simplified finder chart for HR747.

Visibility of HR747 from your location

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

HR747 is circumpolar and transits at 02:38 UTC (altitude: 75.7°)

Digitized Sky Survey image of HR747

The image below is a photograph of HR747 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 HR747 is 0.042 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR747 star
DSS2 image of HR747. The red arrow shows the motion of HR747 during the next 10000 years (7.00 arcmin in Right Ascension and -0.83 arcmin in declination);

Distance of HR747 from the Sun and relative movement

HR747 is distant 815.00 light years from the Sun and it is moving far from the Sun at the speed of 41 kilometers per second.

250.00 pc
815.00 ly
41 km/s
0.042 arcsec/year
-0.005 arcsec/year

Spectral properties of HR747

HR747 belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR747 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR747. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR747