HR821

Below the horizon. Never rises today

Alt: -39.36° Az: 231.95° Direction: South

HR821 is a main-sequence star of spectral class A2 in the constellation of Horologium.

HR821 visual magnitude is 6.15. Because of its faintness, HR821 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR821. The red arrow shows the motion of HR821 during the next 10000 years (-2.00 arcmin in Right Ascension and -2.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 02h 44m 59s

Declination -52° 27’ 49”

Hour Angle 06h 08m 21s

Sidereal Time 08h 53m 21s

J2000

Right Ascension 02h 44m 10s

Declination -52° 34’ 14”

Galactic Coordinates

Galactic Longitude 271.1°

Galactic Latitude -57.02°

Finder Chart

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Finder chart for HR821.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.15

Class Main-sequence

Absolute magnitude 0.68

Spectral Type A2V

Color Index (B-V) 0.09

Temperature 9125K

The red dot in the diagram below shows where HR821 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR821. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR821 is distant 404.47 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

Distance (parsec) 124.07

Distance (light year) 404.47

Radial Speed 10 km/s

Proper Motion RA -0.012 arcsec/y

Proper Motion Dec -0.015"/y

Alternative Designations

Henry Draper Catalogue HD17254

SAO Catalogue SAO232871

Hipparcos Catalogue HIP12775

Durchmusterung Catalogue CP-53 475

Visibility from Your Location

HR821 is currently not visible from Greenwich, UK

Set Location

Other stars in Horologium