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🌎  Greenwich, United Kingdom [change]

HR8818

HR8818 is a variable giant star in the constellation of Grus.

HR8818 visual magnitude is 5.83. Because of its reltive faintness, HR8818 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 HR8818:

5.83
Giant
HR8818 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR8818

HR8818 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 HR8818 are provided in the following table:

23h 10m 09s
-40° 35’ 30”
353.6°
-65.18°
Grus

The simplified sky map below shows the position of HR8818 in the sky:

Finder chart HR8818 star
Simplified finder chart for HR8818.

Visibility of HR8818 from your location

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

HR8818 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR8818

The image below is a photograph of HR8818 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 HR8818 is 0.035 arcsec per year in Right Ascension and -0.046 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8818 star
DSS2 image of HR8818. The red arrow shows the motion of HR8818 during the next 10000 years (5.83 arcmin in Right Ascension and -7.67 arcmin in declination);

Distance of HR8818 from the Sun and relative movement

HR8818 is distant 799.02 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

245.10 pc
799.02 ly
-7 km/s
0.035 arcsec/year
-0.046 arcsec/year

Spectral properties of HR8818

HR8818 belongs to spectral class M4 and has a luminosity class of III corresponding to a giant star.

-1.12
M4III
3622K

The red dot in the diagram below shows where HR8818 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8818. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8818

SAO231465
SAO231465