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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:12 
Transit: 13:06 
Sunset: 20:59
wb_twilight   (Civil Twilight)   What's Visible Now?
All Constellations » Aries » 

HR644

Below the horizon.  Rise: 22:48 | Tran: 7:08 | Set: 15:23
Alt: -7.32°   Az: 34.19°   Direction: North-East

HR644 is a hypergiant star of spectral class K0 in the constellation of Aries.

HR644 visual magnitude is 5.96. Because of its faintness, HR644 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 HR644 star
DSS2 image of HR644. The red arrow shows the motion of HR644 during the next 10000 years (6.83 arcmin in Right Ascension and -1.00 arcmin in declination);

Celestial Coordinates

Apparent

02h 14m 01s
+24° 16’ 55”
14h 30m 46s
16h 44m 47s

J2000

02h 12m 37s
+24° 10’ 04”

Galactic Coordinates

145.69°
-35.09°

Finder Chart

Finder chart HR644 star
Simplified finder chart for HR644.

Magnitude, Color, Spectral Class

5.96
Hypergiant

-0.23
K0
4000K

The red dot in the diagram below shows where HR644 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR644. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR644 is distant 564.99 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

173.31
564.99
-1 km/s
0.041 arcsec/y
-0.006"/y

Alternative Designations

SAO75203
SAO75203

Visibility from Your Location

Today's HR644 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 65.7°
Max altitude: 62.8°
Azimuth: 294.3°