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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:43 
Transit: 13:00 
Sunset: 21:18
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All Constellations » Ursa Major » 

HR3870

Above the horizon.  Circumpolar today
Alt: 60.19°   Az: 301.09°   Direction: West-North-West

HR3870 is a variable giant star of spectral class M3 in the constellation of Ursa Major.

HR3870 visual magnitude is 5.2. Because of its faintness, HR3870 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 HR3870 star
DSS2 image of HR3870. The red arrow shows the motion of HR3870 during the next 10000 years (0.67 arcmin in Right Ascension and 5.67 arcmin in declination);

Celestial Coordinates

Apparent

09h 48m 18s
+57° 00’ 33”
03h 25m 41s
13h 13m 59s

J2000

09h 46m 31s
+57° 07’ 41”

Galactic Coordinates

157.15°
45.82°

Finder Chart

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Finder chart for HR3870.

Magnitude, Color, Spectral Class

5.2
Giant

-0.96
M3III
3622K

The red dot in the diagram below shows where HR3870 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3870. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR3870 is distant 556.31 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

170.65
556.31
8 km/s
0.004 arcsec/y
0.034"/y

Alternative Designations

SAO27377
SAO27377

Visibility from Your Location

HR3870 is circumpolar and transits at 16:07 UTC (altitude: 84.5°)