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: 7:04  
clear_day Transit: 12:47  
SunsetSet: 18:30 south
sunny DaytimeWhat's Visible Now
All Constellations » Cygnus » 


Altitude: 3.6°   Azimuth: 27.0°   Direction: North-North-East

HR7655 is a hypergiant star in the constellation of Cygnus.

HR7655 visual magnitude is 6.2. Because of its reltive faintness, HR7655 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 HR7655:


HR7655 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 3.6°
Azimuth: 27.0°
Direction: North-North-East

Celestial coordinates and finder chart of HR7655

HR7655 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 HR7655 are provided in the following table:

20h 01m 15s
+37° 05’ 56”

The simplified sky map below shows the position of HR7655 in the sky:

Finder chart HR7655 star
Simplified finder chart for HR7655.

Visibility of HR7655 from your location

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

Today's HR7655 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.9°
Max altitude: 75.6°
Azimuth: 307.1°

Digitized Sky Survey image of HR7655

The image below is a photograph of HR7655 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 HR7655 is 0.044 arcsec per year in Right Ascension and 0.051 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7655 star
DSS2 image of HR7655. The red arrow shows the motion of HR7655 during the next 10000 years (7.33 arcmin in Right Ascension and 8.50 arcmin in declination);

Distance of HR7655 from the Sun and relative movement

HR7655 is distant 1,003.08 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

307.69 pc
1,003.08 ly
-16 km/s
0.044 arcsec/year
0.051 arcsec/year

Spectral properties of HR7655

HR7655 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 HR7655 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7655. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7655