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: 6:47  
clear_day Transit: 12:50  
SunsetSet: 18:52 south
sleep NighttimeWhat's Visible Now
All Constellations » Cygnus » 


Altitude: 72.7°   Azimuth: 283.0°   Direction: West-North-West

HR7651 is a giant star in the constellation of Cygnus.

HR7651 visual magnitude is 6.15. Because of its reltive faintness, HR7651 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 HR7651:


HR7651 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 72.7°
Azimuth: 283.0°
Direction: West-North-West

Celestial coordinates and finder chart of HR7651

HR7651 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 HR7651 are provided in the following table:

19h 59m 15s
+52° 03’ 20”

The simplified sky map below shows the position of HR7651 in the sky:

Finder chart HR7651 star
Simplified finder chart for HR7651.

Visibility of HR7651 from your location

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

HR7651 is circumpolar and transits at 19:45 UTC (altitude: 89.4°)

Digitized Sky Survey image of HR7651

The image below is a photograph of HR7651 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 HR7651 is 0.015 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7651 star
DSS2 image of HR7651. The red arrow shows the motion of HR7651 during the next 10000 years (2.50 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR7651 from the Sun and relative movement

HR7651 is distant 768.87 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

235.85 pc
768.87 ly
-16 km/s
0.015 arcsec/year
0.006 arcsec/year

Spectral properties of HR7651

HR7651 belongs to spectral class B5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR7651 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7651. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7651