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public LocationGreenwich, UK
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?


Above the horizon.  Circumpolar today
Altitude: 24.6°   Azimuth: 43.2°   Direction: North-East

HR6641 is a main-sequence star of spectral class A2 in the constellation of Hercules.

HR6641 visual magnitude is 6.43. Because of its faintness, HR6641 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.

Celestial coordinates and finder chart of HR6641

Finder chart HR6641 star
Simplified finder chart for HR6641.

HR6641 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6641 are provided in the following table:

17h 47m 08s
+47° 36’ 43”
Image of HR6641 star
DSS2 image of HR6641. The red arrow shows the motion of HR6641 during the next 100000 years (-6.67 arcmin in Right Ascension and 8.33 arcmin in declination);

Key facts about HR6641


and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR6641 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6641. Attribution: Richard Powell / CC BY-SA

Distance of HR6641 from the Sun and relative movement

HR6641 is distant 428.95 light years from the Sun and it is moving towards the Sun at the speed of 26 kilometers per second.

131.58 pc
428.95 ly
-26 km/s
-0.004 arcsec/year
0.005 arcsec/year

Alternative designations of HR6641


Visibility of HR6641 from your location

HR6641 is circumpolar and transits at 23:44 UTC (altitude: 86.1°)