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🌎  Greenwich, United Kingdom [change]


HR1815 is a giant star in the constellation of Mensa.

HR1815 visual magnitude is 6.51. Because of its reltive faintness, HR1815 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 HR1815:

HR1815 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR1815

HR1815 is situated close to the southern celestial pole and, as such, it is easilty visible for most part of the year from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR1815 are provided in the following table:

05h 12m 25s
-81° 32’ 30”

The simplified sky map below shows the position of HR1815 in the sky:

Finder chart HR1815 star
Simplified finder chart for HR1815.

Visibility of HR1815 from your location

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

HR1815 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR1815

The image below is a photograph of HR1815 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 HR1815 is 0.011 arcsec per year in Right Ascension and 0.05 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1815 star
DSS2 image of HR1815. The red arrow shows the motion of HR1815 during the next 10000 years (1.83 arcmin in Right Ascension and 8.33 arcmin in declination);

Distance of HR1815 from the Sun and relative movement

HR1815 is distant 616.26 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

189.04 pc
616.26 ly
19 km/s
0.011 arcsec/year
0.05 arcsec/year

Spectral properties of HR1815

HR1815 belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR1815 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR1815. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1815