HR8666

Above the horizon. Circumpolar today

Alt: 47.31° Az: 287.65° Direction: West-North-West

HR8666 is a variable hypergiant star of spectral class F0 in the constellation of Lacerta.

HR8666 visual magnitude is 5.76. Because of its faintness, HR8666 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 HR8666. The red arrow shows the motion of HR8666 during the next 1000 years (2.33 arcmin in Right Ascension and 0.53 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 47m 16s

Declination +44° 40’ 37”

Hour Angle 04h 21m 15s

Sideral Time 03h 08m 31s

J2000

Right Ascension 22h 46m 10s

Declination +44° 32’ 45”

Galactic Coordinates

Galactic Longitude 100.6°

Galactic Latitude -12.83°

Finder Chart

Simplified finder chart for HR8666.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.76

Class Hypergiant

Absolute magnitude 2.13

Spectral Type F0III

Color Index (B-V) 0.36

Temperature 7101K

The red dot in the diagram below shows where HR8666 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8666. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR8666 is distant 173.50 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

Distance (parsec) 53.22

Distance (light year) 173.50

Radial Speed -10 km/s

Proper Motion RA 0.14 arcsec/y

Proper Motion Dec 0.032"/y

Alternative Designations

Henry Draper Catalogue HD215664

SAO Catalogue SAO52348

Hipparcos Catalogue HIP112417

Durchmusterung Catalogue BD+43 4300

General Catalogue of Variable Stars 14311

Visibility from Your Location

HR8666 is circumpolar and transits at 21:50 UTC (altitude: 83.2°)

Set Location

Other stars in Lacerta