HR266

Above the horizon. Circumpolar today

Alt: 71.16° Az: 310.21° Direction: North-West

HR266 is a multiple sub-giant star of spectral class B9 in the constellation of Cassiopeia.

HR266 visual magnitude is 5.55. Because of its faintness, HR266 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 HR266. The red arrow shows the motion of HR266 during the next 10000 years (5.33 arcmin in Right Ascension and -1.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 00h 58m 17s

Declination +60° 29’ 46”

Hour Angle 02h 00m 13s

Sideral Time 02h 58m 30s

J2000

Right Ascension 00h 56m 47s

Declination +60° 21’ 46”

Galactic Coordinates

Galactic Longitude 123.59°

Galactic Latitude -2.5°

Finder Chart

Simplified finder chart for HR266.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.55

Class Sub-giant

Absolute magnitude -0.82

Spectral Type B9IV

Color Index (B-V) -0.07

Temperature 11092K

The red dot in the diagram below shows where HR266 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR266. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR266 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 HR266 double sysyem:

Main star magnitude 5.55

Secondary star magnitude 6.05

Magnitude difference 0.5

Separation 0.2 arcsec

Distance, Radial Speed, Proper Motion

HR266 is distant 613.94 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

Distance (parsec) 188.32

Distance (light year) 613.94

Radial Speed -5 km/s

Proper Motion RA 0.032 arcsec/y

Proper Motion Dec -0.008"/y

Alternative Designations

Henry Draper Catalogue HD5408

SAO Catalogue SAO11484

Hipparcos Catalogue HIP4440

Durchmusterung Catalogue BD+59 146

Aitken Double Star Catalogue ADS784

Visibility from Your Location

HR266 is circumpolar and transits at 00:05 UTC (altitude: 81.0°)

Set Location

Other stars in Cassiopeia