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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: 7:50  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
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All Constellations » Carina » 


Altitude: -78.0°   Azimuth: 163.0°   Direction: South-South-East

HR3816 is a variable and double giant star in the constellation of Carina.

HR3816 visual magnitude is 6.1. Because of its reltive faintness, HR3816 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 HR3816:


HR3816 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -78.0°
Azimuth: 163.0°
Direction: South-South-East

Celestial coordinates and finder chart of HR3816

HR3816 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 HR3816 are provided in the following table:

09h 32m 14s
-62° 47’ 20”

The simplified sky map below shows the position of HR3816 in the sky:

Finder chart HR3816 star
Simplified finder chart for HR3816.

Visibility of HR3816 from your location

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

HR3816 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR3816

The image below is a photograph of HR3816 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 HR3816 is -0.036 arcsec per year in Right Ascension and 0.02 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3816 star
DSS2 image of HR3816. The red arrow shows the motion of HR3816 during the next 10000 years (-6.00 arcmin in Right Ascension and 3.33 arcmin in declination);

Distance of HR3816 from the Sun and relative movement

HR3816 is distant 415.82 light years from the Sun and it is moving far from the Sun at the speed of 28 kilometers per second.

127.55 pc
415.82 ly
28 km/s
-0.036 arcsec/year
0.02 arcsec/year

Spectral properties of HR3816

HR3816 belongs to spectral class M6 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR3816 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3816. Attribution: Richard Powell / CC BY-SA

HR3816 star system properties

HR3816 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 HR3816 double sysyem:

2.1 arcsec

Alternative designations of HR3816