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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:08  
clear_day Transit: 12:59  
SunsetSet: 19:51
sunny DaytimeWhat's Visible Now?
All Constellations » Capricornus » 


Altitude: 17.3°   Azimuth: 208.5°   Direction: South-South-West

HR8340 is a hypergiant star in the constellation of Capricornus.

HR8340 visual magnitude is 6.38. Because of its reltive faintness, HR8340 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR8340 is 0.034 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8340 star
DSS2 image of HR8340. The red arrow shows the motion of HR8340 during the next 10000 years (5.67 arcmin in Right Ascension and 0.00 arcmin in declination);

Key facts about HR8340


HR8340 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 17.3°
Azimuth: 208.5°
Direction: South-South-West

Celestial coordinates and finder chart of HR8340

HR8340 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8340 are provided in the following table:

21h 50m 13s
-16° 50’ 40”

The simplified sky map below shows the position of HR8340 in the sky:

Finder chart HR8340 star
Simplified finder chart for HR8340.

Visibility of HR8340 from your location

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

Today's HR8340 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 106.8°
Max altitude: 21.7°
Azimuth: 253.2°

Distance of HR8340 from the Sun and relative movement

HR8340 is distant 739.23 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

226.76 pc
739.23 ly
-1 km/s
0.034 arcsec/year

Spectral properties of HR8340

HR8340 belongs to spectral class K0


The red dot in the diagram below shows where HR8340 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8340. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8340