HR7811

Above the horizon. Rise: 21:34 | Tran: 5:34 | Set: 13:30

Alt: 21.05° Az: 81.55° Direction: East

HR7811 is a variable giant star of spectral class G6 in the constellation of Vulpecula.

HR7811 visual magnitude is 5.66. Because of its faintness, HR7811 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 HR7811. The red arrow shows the motion of HR7811 during the next 10000 years (1.67 arcmin in Right Ascension and -1.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 26m 47s

Declination +21° 29’ 38”

Hour Angle 18h 28m 44s

Sidereal Time 14h 55m 31s

J2000

Right Ascension 20h 25m 40s

Declination +21° 24’ 34”

Galactic Coordinates

Galactic Longitude 63.02°

Galactic Latitude -9.48°

Finder Chart

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Finder chart for HR7811.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.66

Class Giant

Absolute magnitude -0.45

Spectral Type G6III

Color Index (B-V) 0.93

Temperature 4917K

The red dot in the diagram below shows where HR7811 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7811. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR7811 is distant 543.33 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

Distance (parsec) 166.67

Distance (light year) 543.33

Radial Speed -22 km/s

Proper Motion RA 0.01 arcsec/y

Proper Motion Dec -0.011"/y

Alternative Designations

Henry Draper Catalogue HD194577

SAO Catalogue SAO88664

Hipparcos Catalogue HIP100754

Durchmusterung Catalogue BD+20 4559

FK5 Catalogue 3634

General Catalogue of Variable Stars Var

Visibility from Your Location

Today's HR7811 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 68.5° RISE 21:34

Max altitude: 60.0° TRANSIT 5:34

Azimuth: 291.5° SET 13:30

Set Location

Other stars in Vulpecula