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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:59  
clear_day Transit: 12:12  
SunsetSet: 17:25
sunny DaytimeWhat's Visible Now?
All Constellations » Cygnus » 


Altitude: 83.7°   Azimuth: 281.5°   Direction: West-North-West

HR7854 is a hypergiant star in the constellation of Cygnus.

HR7854 visual magnitude is 6.18. Because of its reltive faintness, HR7854 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR7854 is 0.036 arcsec per year in Right Ascension and 0.068 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7854 star
DSS2 image of HR7854. The red arrow shows the motion of HR7854 during the next 10000 years (6.00 arcmin in Right Ascension and 11.33 arcmin in declination);

Key facts about HR7854


HR7854 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 83.7°
Azimuth: 281.5°
Direction: West-North-West

Celestial coordinates and finder chart of HR7854

HR7854 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 HR7854 are provided in the following table:

20h 31m 21s
+52° 18’ 34”

The simplified sky map below shows the position of HR7854 in the sky:

Finder chart HR7854 star
Simplified finder chart for HR7854.

Visibility of HR7854 from your location

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

HR7854 is circumpolar and transits at 10:20 UTC (altitude: 89.2°)

Distance of HR7854 from the Sun and relative movement

HR7854 is distant 347.92 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

106.72 pc
347.92 ly
-10 km/s
0.036 arcsec/year
0.068 arcsec/year

Spectral properties of HR7854

HR7854 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 HR7854 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7854. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7854