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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: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
sunny DaytimeWhat's Visible Now?
All Constellations » Horologium » 


Altitude: -28.2°   Azimuth: 194.5°   Direction: South-South-West

HR798 is a main-sequence star in the constellation of Horologium.

HR798 visual magnitude is 6.55. Because of its reltive faintness, HR798 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 HR798 is 0.025 arcsec per year in Right Ascension and 0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR798 star
DSS2 image of HR798. The red arrow shows the motion of HR798 during the next 10000 years (4.17 arcmin in Right Ascension and 2.17 arcmin in declination);

Key facts about HR798


HR798 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -28.2°
Azimuth: 194.5°
Direction: South-South-West

Celestial coordinates and finder chart of HR798

HR798 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 HR798 are provided in the following table:

02h 39m 31s
-64° 16’ 54”

The simplified sky map below shows the position of HR798 in the sky:

Finder chart HR798 star
Simplified finder chart for HR798.

Visibility of HR798 from your location

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

HR798 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR798 from the Sun and relative movement

HR798 is distant 488.02 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

149.70 pc
488.02 ly
-1 km/s
0.025 arcsec/year
0.013 arcsec/year

Spectral properties of HR798

HR798 belongs to spectral class B8 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR798 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR798. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR798