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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:15 
Transit: 13:06 
Sunset: 20:56
sunny   (Daytime)   What's Visible Now?
All Constellations » Cepheus » 

HR240

Above the horizon.  Circumpolar today
Alt: 50.88°   Az: 350.21°   Direction: North

HR240 is a main-sequence star of spectral class A4 in the constellation of Cepheus.

HR240 visual magnitude is 5.62. Because of its faintness, HR240 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.

Image of HR240 star
DSS2 image of HR240. The red arrow shows the motion of HR240 during the next 10000 years (10.33 arcmin in Right Ascension and -3.67 arcmin in declination);

Celestial Coordinates

Apparent

00h 57m 21s
+83° 50’ 23”
06h 07m 09s
07h 04m 30s

J2000

00h 54m 53s
+83° 42’ 25”

Galactic Coordinates

123.03°
20.84°

Finder Chart

Finder chart HR240 star
Simplified finder chart for HR240.

Magnitude, Color, Spectral Class

5.62
Main-sequence

1.24
A4V
9125K

The red dot in the diagram below shows where HR240 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR240. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR240 is distant 245.11 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

75.19
245.11
12 km/s
0.062 arcsec/y
-0.022"/y

Alternative Designations

SAO143
SAO143

Visibility from Your Location

HR240 is circumpolar and transits at 04:43 UTC (altitude: 57.6°)