Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:50  
clear_day Transit: 12:56  
SunsetSet: 21:02 south
sunny DaytimeWhat's Visible Now
All Constellations » Carina » 


HR3864 is a hypergiant star in the constellation of Carina.

HR3864 visual magnitude is 5.8. Because of its reltive faintness, HR3864 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 HR3864:

HR3864 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR3864

HR3864 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 HR3864 are provided in the following table:

09h 41m 02s
-57° 15’ 34”

The simplified sky map below shows the position of HR3864 in the sky:

Finder chart HR3864 star
Simplified finder chart for HR3864.

Visibility of HR3864 from your location

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

HR3864 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR3864

The image below is a photograph of HR3864 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 HR3864 is 0.081 arcsec per year in Right Ascension and -0.043 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3864 star
DSS2 image of HR3864. The red arrow shows the motion of HR3864 during the next 10000 years (13.50 arcmin in Right Ascension and -7.17 arcmin in declination);

Distance of HR3864 from the Sun and relative movement

HR3864 is distant 362.22 light years from the Sun and it is moving far from the Sun at the speed of 39 kilometers per second.

111.11 pc
362.22 ly
39 km/s
0.081 arcsec/year
-0.043 arcsec/year

Spectral properties of HR3864

HR3864 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR3864 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3864. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3864