HR7991

Below the horizon. Rise: 19:38 | Tran: 22:25 | Set: 1:16

Alt: -39.19° Az: 268.22° Direction: West

HR7991 is a giant star of spectral class K1 in the constellation of Microscopium.

HR7991 visual magnitude is 6.35. Because of its faintness, HR7991 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 HR7991. The red arrow shows the motion of HR7991 during the next 10000 years (6.00 arcmin in Right Ascension and -1.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 54m 55s

Declination -30° 37’ 26”

Hour Angle 07h 43m 16s

Sideral Time 04h 38m 11s

J2000

Right Ascension 20h 53m 25s

Declination -30° 43’ 06”

Galactic Coordinates

Galactic Longitude 13.89°

Galactic Latitude -38.4°

Finder Chart

Simplified finder chart for HR7991.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.35

Class Giant

Absolute magnitude 0.29

Spectral Type K1III

Color Index (B-V) 1.09

Temperature 4537K

The red dot in the diagram below shows where HR7991 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7991. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR7991 is distant 530.94 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 162.87

Distance (light year) 530.94

Radial Speed -7 km/s

Proper Motion RA 0.036 arcsec/y

Proper Motion Dec -0.008"/y

Alternative Designations

Henry Draper Catalogue HD198751

SAO Catalogue SAO212521

Hipparcos Catalogue HIP103103

Durchmusterung Catalogue CD-3117917

Visibility from Your Location

Today's HR7991 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 120.6° RISE 19:38

Max altitude: 7.9° TRANSIT 22:25

Azimuth: 239.4° SET 1:16

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Microscopium