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🌎  Greenwich, United Kingdom [change]


HR1021 is a hypergiant star in the constellation of Horologium.

HR1021 visual magnitude is 6.39. Because of its reltive faintness, HR1021 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 HR1021:

HR1021 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR1021

HR1021 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 HR1021 are provided in the following table:

03h 21m 33s
-47° 46’ 36”

The simplified sky map below shows the position of HR1021 in the sky:

Finder chart HR1021 star
Simplified finder chart for HR1021.

Visibility of HR1021 from your location

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

HR1021 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR1021

The image below is a photograph of HR1021 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 HR1021 is -0.002 arcsec per year in Right Ascension and -0.023 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1021 star
DSS2 image of HR1021. The red arrow shows the motion of HR1021 during the next 10000 years (-0.33 arcmin in Right Ascension and -3.83 arcmin in declination);

Distance of HR1021 from the Sun and relative movement

HR1021 is distant 453.41 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

139.08 pc
453.41 ly
-2 km/s
-0.002 arcsec/year
-0.023 arcsec/year

Spectral properties of HR1021

HR1021 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR1021 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR1021. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1021