Your Guide to the Solar System and the Night Sky
This site is free and ad-free thanks to the support of our users. If you can, please consider a donation.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:46  
clear_day Transit: 12:51  
SunsetSet: 18:55 south
sleep NighttimeWhat's Visible Now
All Constellations » Carina » 


Altitude: -50.6°   Azimuth: 138.4°   Direction: South-East

HR4120 is a hypergiant star in the constellation of Carina.

HR4120 visual magnitude is 5.29. Because of its reltive faintness, HR4120 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 HR4120:


HR4120 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -50.6°
Azimuth: 138.4°
Direction: South-East

Celestial coordinates and finder chart of HR4120

HR4120 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 HR4120 are provided in the following table:

10h 28m 52s
-64° 10’ 19”

The simplified sky map below shows the position of HR4120 in the sky:

Finder chart HR4120 star
Simplified finder chart for HR4120.

Visibility of HR4120 from your location

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

HR4120 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR4120

The image below is a photograph of HR4120 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 HR4120 is -0.013 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4120 star
DSS2 image of HR4120. The red arrow shows the motion of HR4120 during the next 10000 years (-2.17 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR4120 from the Sun and relative movement

HR4120 is distant 3,134.62 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

961.54 pc
3,134.62 ly
-3 km/s
-0.013 arcsec/year
0.006 arcsec/year

Spectral properties of HR4120

HR4120 belongs to spectral class M0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4120 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4120. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4120