We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Your support keeps us free & ad-free » Donate
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Cygnus » 


Altitude: 3.9°   Azimuth: 315.8°   Direction: North-West

HR7670 is a double sub-giant star in the constellation of Cygnus.

HR7670 visual magnitude is 5.71. Because of its reltive faintness, HR7670 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR7670 is 0.683 arcsec per year in Right Ascension and -0.526 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR7670 star
DSS2 image of HR7670. The red arrow shows the motion of HR7670 during the next 1000 years (11.38 arcmin in Right Ascension and -8.77 arcmin in declination);

Key facts about HR7670


HR7670 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 3.9°
Azimuth: 315.8°
Direction: North-West

Celestial coordinates and finder chart of HR7670

HR7670 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 HR7670 are provided in the following table:

20h 03m 37s
+29° 53’ 48”

The simplified sky map below shows the position of HR7670 in the sky:

Finder chart HR7670 star
Simplified finder chart for HR7670.

Visibility of HR7670 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 HR7670 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: 60.1°
Max altitude: 68.4°
Azimuth: 299.9°

Distance of HR7670 from the Sun and relative movement

HR7670 is distant 51.81 light years from the Sun and it is moving towards the Sun at the speed of 45 kilometers per second.

15.89 pc
51.81 ly
-45 km/s
0.683 arcsec/year
-0.526 arcsec/year

Spectral properties of HR7670

HR7670 belongs to spectral class G6 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR7670 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7670. Attribution: Richard Powell / CC BY-SA

HR7670 star system properties

HR7670 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR7670 double sysyem:

179 arcsec

Alternative designations of HR7670

Gl 777 A