HR540

Above the horizon. Circumpolar today

Alt: 58.39° Az: 60.65° Direction: East-North-East

HR540 is a star of spectral class A5 in the constellation of Perseus.

HR540 visual magnitude is 6.45. Because of its faintness, HR540 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 HR540. The red arrow shows the motion of HR540 during the next 10000 years (8.17 arcmin in Right Ascension and 0.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 01h 55m 28s

Declination +55° 43’ 11”

Hour Angle 20h 23m 09s

Sidereal Time 22h 18m 38s

J2000

Right Ascension 01h 53m 48s

Declination +55° 35’ 53”

Galactic Coordinates

Galactic Longitude 131.72°

Galactic Latitude -6.21°

Finder Chart

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Finder chart for HR540.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.45

Class

Absolute magnitude 2.12

Spectral Type A5

Color Index (B-V) 0.18

Temperature 8321K

The red dot in the diagram below shows where HR540 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR540. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR540 is distant 239.53 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

Distance (parsec) 73.48

Distance (light year) 239.53

Radial Speed 8 km/s

Proper Motion RA 0.049 arcsec/y

Proper Motion Dec 0.001"/y

Alternative Designations

Henry Draper Catalogue HD11408

SAO Catalogue SAO22716

Hipparcos Catalogue HIP8847

Durchmusterung Catalogue BD+54 408

Visibility from Your Location

HR540 is circumpolar and transits at 20:47 UTC (altitude: 85.8°)

Set Location

Other stars in Perseus