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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
north SunriseRise: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sunny DaytimeWhat's Visible Now?
All Constellations » Lacerta » 


Altitude: 31.7°   Azimuth: 69.9°   Direction: East-North-East

HR8723 is a double giant star in the constellation of Lacerta.

HR8723 visual magnitude is 5.74. Because of its reltive faintness, HR8723 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 HR8723:


HR8723 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 31.7°
Azimuth: 69.9°
Direction: East-North-East

Celestial coordinates and finder chart of HR8723

HR8723 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 HR8723 are provided in the following table:

22h 55m 44s
+36° 21’ 06”

The simplified sky map below shows the position of HR8723 in the sky:

Finder chart HR8723 star
Simplified finder chart for HR8723.

Visibility of HR8723 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 HR8723 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: 53.6°
Max altitude: 74.9°
Azimuth: 306.4°

Digitized Sky Survey image of HR8723

The image below is a photograph of HR8723 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 HR8723 is 0.022 arcsec per year in Right Ascension and 0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8723 star
DSS2 image of HR8723. The red arrow shows the motion of HR8723 during the next 10000 years (3.67 arcmin in Right Ascension and 0.83 arcmin in declination);

Distance of HR8723 from the Sun and relative movement

HR8723 is distant 835.90 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

256.41 pc
835.90 ly
1 km/s
0.022 arcsec/year
0.005 arcsec/year

Spectral properties of HR8723

HR8723 belongs to spectral class B7 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR8723 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR8723. Attribution: Richard Powell / CC BY-SA

HR8723 star system properties

HR8723 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR8723 double sysyem:

51 arcsec

Alternative designations of HR8723