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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:49  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sunny DaytimeWhat's Visible Now?
All Constellations » Carina » 


Altitude: -44.6°   Azimuth: 227.7°   Direction: South-West

HR3863 is a double sub-giant star in the constellation of Carina.

HR3863 visual magnitude is 5.32. Because of its reltive faintness, HR3863 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR3863:


HR3863 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -44.6°
Azimuth: 227.7°
Direction: South-West

Celestial coordinates and finder chart of HR3863

HR3863 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3863 are provided in the following table:

09h 40m 42s
-57° 59’ 00”

The simplified sky map below shows the position of HR3863 in the sky:

Finder chart HR3863 star
Simplified finder chart for HR3863.

Visibility of HR3863 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR3863 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR3863

The image below is a photograph of HR3863 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR3863 is -0.034 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3863 star
DSS2 image of HR3863. The red arrow shows the motion of HR3863 during the next 10000 years (-5.67 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR3863 from the Sun and relative movement

HR3863 is distant 219.53 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

67.34 pc
219.53 ly
7 km/s
-0.034 arcsec/year
0.006 arcsec/year

Spectral properties of HR3863

HR3863 belongs to spectral class A3 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR3863 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3863. Attribution: Richard Powell / CC BY-SA

HR3863 star system properties

HR3863 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 HR3863 double sysyem:

0.2 arcsec

Alternative designations of HR3863