HR8799

Above the horizon. Rise: 16:16 | Tran: 0:11 | Set: 8:09

Alt: 31.58° Az: 264.92° Direction: West

HR8799 is a variable main-sequence star of spectral class A5 in the constellation of Pegasus.

HR8799 visual magnitude is 5.99. Because of its faintness, HR8799 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 HR8799. The red arrow shows the motion of HR8799 during the next 1000 years (1.80 arcmin in Right Ascension and -0.87 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 23h 08m 41s

Declination +21° 16’ 05”

Hour Angle 04h 22m 19s

Sideral Time 03h 31m 01s

J2000

Right Ascension 23h 07m 28s

Declination +21° 08’ 03”

Galactic Coordinates

Galactic Longitude 92.76°

Galactic Latitude -35.57°

Finder Chart

Simplified finder chart for HR8799.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.99

Class Main-sequence

Absolute magnitude 2.98

Spectral Type A5V

Color Index (B-V) 0.26

Temperature 7726K

The red dot in the diagram below shows where HR8799 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8799. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR8799 is distant 130.19 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

Distance (parsec) 39.94

Distance (light year) 130.19

Radial Speed -12 km/s

Proper Motion RA 0.108 arcsec/y

Proper Motion Dec -0.052"/y

Alternative Designations

Henry Draper Catalogue HD218396

SAO Catalogue SAO91022

Hipparcos Catalogue HIP114189

Durchmusterung Catalogue BD+20 5278

FK5 Catalogue 3850

General Catalogue of Variable Stars Var

Visibility from Your Location

Today's HR8799 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 68.7° RISE 16:16

Max altitude: 59.8° TRANSIT 0:11

Azimuth: 291.3° SET 8:09

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

Location

Other stars in Pegasus