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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: 47.9°   Azimuth: 75.6°   Direction: East-North-East

HR1644 is a bright giant star of spectral class F2 in the constellation of Auriga.

HR1644 visual magnitude is 6.2. Because of its faintness, HR1644 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 HR1644

Finder chart HR1644 star
Simplified finder chart for HR1644.

HR1644 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 HR1644 are provided in the following table:

05h 06m 49s
+43° 10’ 28”
Image of HR1644 star
DSS2 image of HR1644. The red arrow shows the motion of HR1644 during the next 100000 years (8.33 arcmin in Right Ascension and 0.00 arcmin in declination);

Key facts about HR1644

Bright giant

and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where HR1644 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1644. Attribution: Richard Powell / CC BY-SA

Distance of HR1644 from the Sun and relative movement

HR1644 is distant 860.16 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

263.85 pc
860.16 ly
-14 km/s
0.005 arcsec/year

Alternative designations of HR1644


Visibility of HR1644 from your location

HR1644 is circumpolar and transits at 11:02 UTC (altitude: 81.7°)