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public  Greenwich, UK Greenwich, UK  ⓘ
Timezone: Europe/London
Sunrise: 5:05 
Transit: 12:56 
Sunset: 20:48
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In Evidence

New Comet C/2025 J1 (Borisov) Discovered in May 2025
Detailed information about the discovery of Comet C/2025 J1 (Borisov) and pointers to useful resources to track and observe it. Read more...

Other stars in Centaurus
All Constellations » Centaurus » 

HR4637

Below the horizon.  Never rises today
Alt: -14.48°   Az: 166.77°   Direction: South-South-East

HR4637 is a giant star of spectral class G6 in the constellation of Centaurus.

HR4637 visual magnitude is 6.23. Because of its faintness, HR4637 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 HR4637 star
DSS2 image of HR4637. The red arrow shows the motion of HR4637 during the next 1000 years (-3.47 arcmin in Right Ascension and -1.12 arcmin in declination);

Celestial Coordinates

Apparent

12h 12m 51s
-51° 30’ 01”
22h 36m 35s
10h 49m 26s

J2000

12h 11m 31s
-51° 21’ 33”

Galactic Coordinates

296.61°
11.02°

Finder Chart

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Finder chart for HR4637.

Magnitude, Color, Spectral Class

⬤
6.23
Giant

2.59
G6III
0.82
5221K

The red dot in the diagram below shows where HR4637 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4637. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR4637 is distant 174.05 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

53.39
174.05
26 km/s
-0.208 arcsec/y
-0.067"/y

Alternative Designations

HD105920
SAO239735
SAO239735
HIP59439
CD-50 6752

Visibility from Your Location

HR4637 is currently not visible from Greenwich, UK