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: 4:49  
clear_day Transit: 12:56  
SunsetSet: 21:04 south
wb_twilight Nautical TwilightWhat's Visible Now
All Constellations » Cygnus » 


HR7827 is a double main-sequence star in the constellation of Cygnus.

HR7827 visual magnitude is 6.36. Because of its reltive faintness, HR7827 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 HR7827:

HR7827 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 75°.

Celestial coordinates and finder chart of HR7827

HR7827 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 HR7827 are provided in the following table:

20h 26m 23s
+56° 38’ 20”

The simplified sky map below shows the position of HR7827 in the sky:

Finder chart HR7827 star
Simplified finder chart for HR7827.

Visibility of HR7827 from your location

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

HR7827 is circumpolar and transits at 03:48 UTC (altitude: 84.8°)

Digitized Sky Survey image of HR7827

The image below is a photograph of HR7827 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 HR7827 is 0.014 arcsec per year in Right Ascension and 0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7827 star
DSS2 image of HR7827. The red arrow shows the motion of HR7827 during the next 10000 years (2.33 arcmin in Right Ascension and 1.67 arcmin in declination);

Distance of HR7827 from the Sun and relative movement

HR7827 is distant 546.98 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

167.79 pc
546.98 ly
-21 km/s
0.014 arcsec/year
0.01 arcsec/year

Spectral properties of HR7827

HR7827 belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR7827 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7827. Attribution: Richard Powell / CC BY-SA

HR7827 star system properties

HR7827 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR7827 double sysyem:

26.6 arcsec

Alternative designations of HR7827