HR7989

Below the horizon. Rise: 2:09 | Tran: 5:54 | Set: 9:39

Alt: -26.37° Az: 95.58° Direction: East

HR7989 is a double hypergiant star of spectral class K0 in the constellation of Capricornus.

HR7989 visual magnitude is 6.33. Because of its faintness, HR7989 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 HR7989. The red arrow shows the motion of HR7989 during the next 1000 years (1.65 arcmin in Right Ascension and -0.88 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 54m 30s

Declination -23° 41’ 09”

Hour Angle 17h 07m 22s

Sidereal Time 14h 01m 52s

J2000

Right Ascension 20h 53m 01s

Declination -23° 46’ 59”

Galactic Coordinates

Galactic Longitude 22.33°

Galactic Latitude -36.58°

Finder Chart

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Finder chart for HR7989.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.33

Class Hypergiant

Absolute magnitude 1.95

Spectral Type K0III

Color Index (B-V) 0.88

Temperature 5051K

The red dot in the diagram below shows where HR7989 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7989. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7989 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR7989 double sysyem:

Main star magnitude 6.33

Secondary star magnitude 8.43

Magnitude difference 2.1

Separation 1.8 arcsec

Distance, Radial Speed, Proper Motion

HR7989 is distant 244.56 light years from the Sun and it is moving towards the Sun at the speed of 40 kilometers per second.

Distance (parsec) 75.02

Distance (light year) 244.56

Radial Speed -40 km/s

Proper Motion RA 0.099 arcsec/y

Proper Motion Dec -0.053"/y

Alternative Designations

Henry Draper Catalogue HD198732

SAO Catalogue SAO189801

Hipparcos Catalogue HIP103071

Durchmusterung Catalogue CD-2416328

Aitken Double Star Catalogue ADS14380

Visibility from Your Location

Today's HR7989 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.7° RISE 2:09

Max altitude: 14.8° TRANSIT 5:54

Azimuth: 246.3° SET 9:39

Set Location

Other stars in Capricornus