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: 6:55  
clear_day Transit: 12:49  
SunsetSet: 18:41 south
sunny DaytimeWhat's Visible Now
All Constellations » Cygnus » 


Altitude: 26.4°   Azimuth: 74.8°   Direction: East-North-East

HR7999 is a star in the constellation of Cygnus.

HR7999 visual magnitude is 6.34. Because of its reltive faintness, HR7999 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 HR7999:


HR7999 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 26.4°
Azimuth: 74.8°
Direction: East-North-East

Celestial coordinates and finder chart of HR7999

HR7999 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 HR7999 are provided in the following table:

20h 53m 07s
+29° 38’ 57”

The simplified sky map below shows the position of HR7999 in the sky:

Finder chart HR7999 star
Simplified finder chart for HR7999.

Visibility of HR7999 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 HR7999 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: 60.4°
Max altitude: 68.2°
Azimuth: 299.6°

Digitized Sky Survey image of HR7999

The image below is a photograph of HR7999 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 HR7999 is -0.001 arcsec per year in Right Ascension and -0.047 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7999 star
DSS2 image of HR7999. The red arrow shows the motion of HR7999 during the next 10000 years (-0.17 arcmin in Right Ascension and -7.83 arcmin in declination);

Distance of HR7999 from the Sun and relative movement

HR7999 is distant 426.70 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

130.89 pc
426.70 ly
-10 km/s
-0.001 arcsec/year
-0.047 arcsec/year

Spectral properties of HR7999

HR7999 belongs to spectral class K2


The red dot in the diagram below shows where HR7999 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7999. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7999