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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: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Carina » 


Altitude: -40.7°   Azimuth: 213.9°   Direction: South-West

HR4222 is a sub-giant star in the constellation of Carina.

HR4222 visual magnitude is 4.85. Because of its moderate brightness, HR4222 should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of HR4222 is -0.023 arcsec per year in Right Ascension and 0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4222 star
DSS2 image of HR4222. The red arrow shows the motion of HR4222 during the next 10000 years (-3.83 arcmin in Right Ascension and 2.00 arcmin in declination);

Key facts about HR4222


HR4222 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -40.7°
Azimuth: 213.9°
Direction: South-West

Celestial coordinates and finder chart of HR4222

HR4222 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4222 are provided in the following table:

10h 46m 51s
-64° 22’ 59”

The simplified sky map below shows the position of HR4222 in the sky:

Finder chart HR4222 star
Simplified finder chart for HR4222.

Visibility of HR4222 from your location

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

HR4222 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR4222 from the Sun and relative movement

HR4222 is distant 449.04 light years from the Sun and it is moving far from the Sun at the speed of 16 kilometers per second.

137.74 pc
449.04 ly
16 km/s
-0.023 arcsec/year
0.012 arcsec/year

Spectral properties of HR4222

HR4222 belongs to spectral class B3 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR4222 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4222. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4222