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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: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
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All Constellations » Horologium » 


Altitude: -34.1°   Azimuth: 208.9°   Direction: South-South-West

HR866 is a variable giant star in the constellation of Horologium.

HR866 visual magnitude is 6.03. Because of its reltive faintness, HR866 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR866 is 0.072 arcsec per year in Right Ascension and 0.001 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR866 star
DSS2 image of HR866. The red arrow shows the motion of HR866 during the next 10000 years (12.00 arcmin in Right Ascension and 0.17 arcmin in declination);

Key facts about HR866


HR866 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -34.1°
Azimuth: 208.9°
Direction: South-South-West

Celestial coordinates and finder chart of HR866

HR866 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR866 are provided in the following table:

02h 52m 19s
-62° 54’ 34”

The simplified sky map below shows the position of HR866 in the sky:

Finder chart HR866 star
Simplified finder chart for HR866.

Visibility of HR866 from your location

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

HR866 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR866 from the Sun and relative movement

HR866 is distant 553.48 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

169.78 pc
553.48 ly
17 km/s
0.072 arcsec/year
0.001 arcsec/year

Spectral properties of HR866

HR866 belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR866 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR866. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR866