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🌎  Greenwich, United Kingdom [change]


HR3812 is a double hypergiant star in the constellation of Antlia.

HR3812 visual magnitude is 6.43. Because of its reltive faintness, HR3812 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 HR3812:

HR3812 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR3812

HR3812 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3812 are provided in the following table:

09h 33m 07s
-39° 07’ 44”

The simplified sky map below shows the position of HR3812 in the sky:

Finder chart HR3812 star
Simplified finder chart for HR3812.

Visibility of HR3812 from your location

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

HR3812 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR3812

The image below is a photograph of HR3812 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 HR3812 is -0.029 arcsec per year in Right Ascension and 0.049 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3812 star
DSS2 image of HR3812. The red arrow shows the motion of HR3812 during the next 10000 years (-4.83 arcmin in Right Ascension and 8.17 arcmin in declination);

Distance of HR3812 from the Sun and relative movement

HR3812 is distant 237.09 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

72.73 pc
237.09 ly
25 km/s
-0.029 arcsec/year
0.049 arcsec/year

Spectral properties of HR3812

HR3812 belongs to spectral class F0 and has a luminosity class of IV corresponding to a hypergiant star.


The red dot in the diagram below shows where HR3812 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3812. Attribution: Richard Powell / CC BY-SA

HR3812 star system properties

HR3812 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR3812 double sysyem:

55.2 arcsec

Alternative designations of HR3812