HR6901

Above the horizon. Circumpolar today

Alt: 1.58° Az: 13.86° Direction: South

HR6901 is a variable and multiple giant star of spectral class K4 in the constellation of Lyra.

HR6901 visual magnitude is 6.36. Because of its faintness, HR6901 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 HR6901. The red arrow shows the motion of HR6901 during the next 10000 years (4.50 arcmin in Right Ascension and 1.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 24m 48s

Declination +38° 45’ 15”

Hour Angle 13h 11m 30s

Sidereal Time 07h 36m 18s

J2000

Right Ascension 18h 23m 57s

Declination +38° 44’ 21”

Galactic Coordinates

Galactic Longitude 66.53°

Galactic Latitude 21.62°

Finder Chart

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Finder chart for HR6901.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.36

Class Giant

Absolute magnitude -0.74

Spectral Type K4III

Color Index (B-V)

Temperature 10125K

The red dot in the diagram below shows where HR6901 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6901. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR6901 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 HR6901 double sysyem:

Main star magnitude 6.36

Secondary star magnitude 12.46

Magnitude difference 6.1

Separation 61.5 arcsec

Distance, Radial Speed, Proper Motion

HR6901 is distant 857.89 light years from the Sun and it is moving towards the Sun at the speed of 40 kilometers per second.

Distance (parsec) 263.16

Distance (light year) 857.89

Radial Speed -40 km/s

Proper Motion RA 0.027 arcsec/y

Proper Motion Dec 0.006"/y

Alternative Designations

Henry Draper Catalogue HD169646

SAO Catalogue SAO66936

Hipparcos Catalogue HIP90163

Durchmusterung Catalogue BD+38 3160

General Catalogue of Variable Stars 10756

Aitken Double Star Catalogue ADS11320

Visibility from Your Location

HR6901 is circumpolar and transits at 00:19 UTC (altitude: 77.3°)

Set Location

Other stars in Lyra