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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:10 
Transit: 12:13 
Sunset: 17:18
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All Constellations » Crux » 

HR4908

Below the horizon.  Never rises today
Alt: -47.82°   Az: 128.20°   Direction: South-East

HR4908 is a variable and double supergiant star of spectral class O9 in the constellation of Crux.

HR4908 visual magnitude is 5.32. Because of its faintness, HR4908 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 HR4908 star
DSS2 image of HR4908. The red arrow shows the motion of HR4908 during the next 10000 years (-4.00 arcmin in Right Ascension and -1.67 arcmin in declination);

Celestial Coordinates

Apparent

12h 57m 26s
-56° 58’ 18”
17h 01m 54s
05h 59m 21s

J2000

12h 55m 56s
-56° 50’ 09”

Galactic Coordinates

303.55°
6.03°

Finder Chart

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Finder chart for HR4908.

Magnitude, Color, Spectral Class

5.32
Supergiant

-3.49
O9I
10002K

The red dot in the diagram below shows where HR4908 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4908. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4908 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR4908 double sysyem:

5.32
10.32
5
29.1 arcsec

Distance, Radial Speed, Proper Motion

HR4908 is distant 1,884.39 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

578.03
1,884.39
18 km/s
-0.024 arcsec/y
-0.01"/y

Alternative Designations

SAO240385
SAO240385

Visibility from Your Location

HR4908 is currently not visible from Greenwich, UK