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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:58 
Transit: 11:43 
Sunset: 16:27
sunny   (Daytime)  
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All Constellations » Vela » 

HR4020

Below the horizon.  Never rises today
Alt: -19.95°   Az: 207.39°   Direction: South-South-West

HR4020 is a variable and double sub-giant star of spectral class A3 in the constellation of Vela.

HR4020 visual magnitude is 5.78. Because of its faintness, HR4020 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 HR4020 star
DSS2 image of HR4020. The red arrow shows the motion of HR4020 during the next 10000 years (-7.67 arcmin in Right Ascension and 0.67 arcmin in declination);

Celestial Coordinates

Apparent

10h 14m 25s
-51° 52’ 47”
02h 57m 53s
13h 12m 18s

J2000

10h 13m 27s
-51° 45’ 21”

Galactic Coordinates

279.69°
3.84°

Finder Chart

Finder chart HR4020 star
Simplified finder chart for HR4020.

Magnitude, Color, Spectral Class

5.78
Sub-giant

0.83
A3IV
8658K

The red dot in the diagram below shows where HR4020 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4020. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4020 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR4020 double sysyem:

5.78
7.28
1.5
0.3 arcsec

Distance, Radial Speed, Proper Motion

HR4020 is distant 318.05 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

97.56
318.05
18 km/s
-0.046 arcsec/y
0.004"/y

Alternative Designations

SAO237807
SAO237807

Visibility from Your Location

HR4020 is currently not visible from Greenwich, UK