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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: 7:01  
clear_day Transit: 12:12  
SunsetSet: 17:24
sunny DaytimeWhat's Visible Now?
All Constellations » Lacerta » 


Altitude: 69.1°   Azimuth: 264.2°   Direction: West

HR8422 is a hypergiant star in the constellation of Lacerta.

HR8422 visual magnitude is 6.44. Because of its reltive faintness, HR8422 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR8422 is 0.026 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8422 star
DSS2 image of HR8422. The red arrow shows the motion of HR8422 during the next 10000 years (4.33 arcmin in Right Ascension and -1.50 arcmin in declination);

Key facts about HR8422


HR8422 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 69.1°
Azimuth: 264.2°
Direction: West

Celestial coordinates and finder chart of HR8422

HR8422 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8422 are provided in the following table:

22h 05m 50s
+45° 06’ 43”

The simplified sky map below shows the position of HR8422 in the sky:

Finder chart HR8422 star
Simplified finder chart for HR8422.

Visibility of HR8422 from your location

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

HR8422 is circumpolar and transits at 11:58 UTC (altitude: 83.6°)

Distance of HR8422 from the Sun and relative movement

HR8422 is distant 698.07 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

214.13 pc
698.07 ly
-4 km/s
0.026 arcsec/year
-0.009 arcsec/year

Spectral properties of HR8422

HR8422 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR8422 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR8422. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8422