HR8421

Above the horizon. Circumpolar today

Alt: 23.12° Az: 317.54° Direction: North-West

HR8421 is a variable giant star of spectral class M4 in the constellation of Lacerta.

HR8421 visual magnitude is 6.13. Because of its faintness, HR8421 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 HR8421. The red arrow shows the motion of HR8421 during the next 10000 years (-7.00 arcmin in Right Ascension and -3.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 06m 15s

Declination +46° 51’ 57”

Hour Angle 07h 39m 02s

Sideral Time 05h 45m 18s

J2000

Right Ascension 22h 05m 16s

Declination +46° 44’ 40”

Galactic Coordinates

Galactic Longitude 95.68°

Galactic Latitude -7.14°

Finder Chart

Simplified finder chart for HR8421.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.13

Class Giant

Absolute magnitude -1.22

Spectral Type M4III

Color Index (B-V) 1.61

Temperature 3635K

The red dot in the diagram below shows where HR8421 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8421. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR8421 is distant 961.65 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 294.99

Distance (light year) 961.65

Radial Speed -13 km/s

Proper Motion RA -0.042 arcsec/y

Proper Motion Dec -0.02"/y

Alternative Designations

Henry Draper Catalogue HD209857

SAO Catalogue SAO51632

Hipparcos Catalogue HIP109033

Durchmusterung Catalogue BD+46 3574

General Catalogue of Variable Stars HT Lac

Visibility from Your Location

HR8421 is circumpolar and transits at 20:38 UTC (altitude: 85.4°)

Set Location

Other stars in Lacerta