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: 6:47  
clear_day Transit: 12:50  
SunsetSet: 18:52 south
wb_twilight Nautical TwilightWhat's Visible Now
All Constellations » Cygnus » 


Altitude: 64.4°   Azimuth: 121.9°   Direction: East-South-East

HR7823 is a bright giant star in the constellation of Cygnus.

HR7823 visual magnitude is 6.39. Because of its reltive faintness, HR7823 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 HR7823:

Bright giant

HR7823 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 64.4°
Azimuth: 121.9°
Direction: East-South-East

Celestial coordinates and finder chart of HR7823

HR7823 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 HR7823 are provided in the following table:

20h 27m 07s
+34° 19’ 44”

The simplified sky map below shows the position of HR7823 in the sky:

Finder chart HR7823 star
Simplified finder chart for HR7823.

Visibility of HR7823 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 HR7823 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: 55.7°
Max altitude: 72.8°
Azimuth: 304.3°

Digitized Sky Survey image of HR7823

The image below is a photograph of HR7823 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 HR7823 is -0.006 arcsec per year in Right Ascension and -0.003 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR7823 star
DSS2 image of HR7823. The red arrow shows the motion of HR7823 during the next 100000 years (-10.00 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR7823 from the Sun and relative movement

HR7823 is distant 2,469.70 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

757.58 pc
2,469.70 ly
-14 km/s
-0.006 arcsec/year
-0.003 arcsec/year

Spectral properties of HR7823

HR7823 belongs to spectral class F1 and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where HR7823 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7823. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7823