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: 6:51  
clear_day Transit: 12:50  
SunsetSet: 18:48 south
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All Constellations » Cygnus » 


Altitude: 51.4°   Azimuth: 286.0°   Direction: West-North-West

HR7841 is a giant star in the constellation of Cygnus.

HR7841 visual magnitude is 6.41. Because of its reltive faintness, HR7841 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 HR7841:


HR7841 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 51.4°
Azimuth: 286.0°
Direction: West-North-West

Celestial coordinates and finder chart of HR7841

HR7841 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 HR7841 are provided in the following table:

20h 29m 59s
+45° 55’ 42”

The simplified sky map below shows the position of HR7841 in the sky:

Finder chart HR7841 star
Simplified finder chart for HR7841.

Visibility of HR7841 from your location

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

HR7841 is circumpolar and transits at 20:08 UTC (altitude: 84.4°)

Digitized Sky Survey image of HR7841

The image below is a photograph of HR7841 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 HR7841 is 0.071 arcsec per year in Right Ascension and 0.154 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR7841 star
DSS2 image of HR7841. The red arrow shows the motion of HR7841 during the next 1000 years (1.18 arcmin in Right Ascension and 2.57 arcmin in declination);

Distance of HR7841 from the Sun and relative movement

HR7841 is distant 414.76 light years from the Sun and it is moving towards the Sun at the speed of 31 kilometers per second.

127.23 pc
414.76 ly
-31 km/s
0.071 arcsec/year
0.154 arcsec/year

Spectral properties of HR7841

HR7841 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR7841 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7841. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7841