HR787

Above the horizon. Circumpolar today

Alt: 87.84° Az: 5.91° Direction: North

HR787 is a double hypergiant star of spectral class K0 in the constellation of Perseus.

HR787 visual magnitude is 5.84. Because of its faintness, HR787 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 HR787. The red arrow shows the motion of HR787 during the next 10000 years (11.33 arcmin in Right Ascension and -5.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 02h 44m 45s

Declination +53° 37’ 48”

Hour Angle 23h 58m 29s

Sideral Time 02h 43m 15s

J2000

Right Ascension 02h 42m 59s

Declination +53° 31’ 33”

Galactic Coordinates

Galactic Longitude 139.16°

Galactic Latitude -5.79°

Finder Chart

Simplified finder chart for HR787.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.84

Class Hypergiant

Absolute magnitude 0.33

Spectral Type K0II

Color Index (B-V) 1.12

Temperature 4472K

The red dot in the diagram below shows where HR787 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR787. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR787 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 HR787 double sysyem:

Main star magnitude 5.84

Secondary star magnitude 14.84

Magnitude difference 9

Separation 12.4 arcsec

Distance, Radial Speed, Proper Motion

HR787 is distant 412.66 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

Distance (parsec) 126.58

Distance (light year) 412.66

Radial Speed -12 km/s

Proper Motion RA 0.068 arcsec/y

Proper Motion Dec -0.03"/y

Alternative Designations

Henry Draper Catalogue HD16735

SAO Catalogue SAO23556

Hipparcos Catalogue HIP12686

Durchmusterung Catalogue BD+52 616

Aitken Double Star Catalogue ADS2059

Visibility from Your Location

HR787 is circumpolar and transits at 01:39 UTC (altitude: 87.8°)

Set Location

Other stars in Perseus