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🌎  Greenwich, United Kingdom [change]


HR4818 is a giant star in the constellation of Centaurus.

HR4818 visual magnitude is 5.84. Because of its reltive faintness, HR4818 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 HR4818:

HR4818 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4818

HR4818 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 HR4818 are provided in the following table:

12h 41m 22s
-46° 08’ 44”

The simplified sky map below shows the position of HR4818 in the sky:

Finder chart HR4818 star
Simplified finder chart for HR4818.

Visibility of HR4818 from your location

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

HR4818 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4818

The image below is a photograph of HR4818 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 HR4818 is -0.069 arcsec per year in Right Ascension and 0.057 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4818 star
DSS2 image of HR4818. The red arrow shows the motion of HR4818 during the next 10000 years (-11.50 arcmin in Right Ascension and 9.50 arcmin in declination);

Distance of HR4818 from the Sun and relative movement

HR4818 is distant 797.07 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

244.50 pc
797.07 ly
7 km/s
-0.069 arcsec/year
0.057 arcsec/year

Spectral properties of HR4818

HR4818 belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4818 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4818. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4818