HR8990

Above the horizon. Circumpolar today

Alt: 53.37° Az: 46.96° Direction: North-East

HR8990 is a double giant star of spectral class K2 in the constellation of Cassiopeia.

HR8990 visual magnitude is 6.4. Because of its faintness, HR8990 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 HR8990. The red arrow shows the motion of HR8990 during the next 10000 years (7.17 arcmin in Right Ascension and -3.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 23h 43m 44s

Declination +61° 49’ 13”

Hour Angle 19h 30m 17s

Sidereal Time 19h 14m 02s

J2000

Right Ascension 23h 42m 31s

Declination +61° 40’ 45”

Galactic Coordinates

Galactic Longitude 114.85°

Galactic Latitude -0.11°

Finder Chart

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Finder chart for HR8990.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.4

Class Giant

Absolute magnitude 0.66

Spectral Type K2III

Color Index (B-V) 1.24

Temperature 4232K

The red dot in the diagram below shows where HR8990 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8990. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR8990 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR8990 double sysyem:

Main star magnitude 6.4

Secondary star magnitude 12.9

Magnitude difference 6.5

Separation 8 arcsec

Distance, Radial Speed, Proper Motion

HR8990 is distant 459.15 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

Distance (parsec) 140.85

Distance (light year) 459.15

Radial Speed -16 km/s

Proper Motion RA 0.043 arcsec/y

Proper Motion Dec -0.021"/y

Alternative Designations

Henry Draper Catalogue HD222682

SAO Catalogue SAO20793

Hipparcos Catalogue HIP116962

Durchmusterung Catalogue BD+60 2609

FK5 Catalogue 3900

Visibility from Your Location

HR8990 is circumpolar and transits at 08:02 UTC (altitude: 79.7°)

Set Location

Other stars in Cassiopeia