Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:49  
clear_day Transit: 12:56  
SunsetSet: 21:04 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Carina » 


HR4173 is a sub-giant star in the constellation of Carina.

HR4173 visual magnitude is 5.91. Because of its reltive faintness, HR4173 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 HR4173:

HR4173 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR4173

HR4173 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 HR4173 are provided in the following table:

10h 38m 02s
-57° 15’ 23”

The simplified sky map below shows the position of HR4173 in the sky:

Finder chart HR4173 star
Simplified finder chart for HR4173.

Visibility of HR4173 from your location

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

HR4173 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR4173

The image below is a photograph of HR4173 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 HR4173 is -0.028 arcsec per year in Right Ascension and 0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4173 star
DSS2 image of HR4173. The red arrow shows the motion of HR4173 during the next 10000 years (-4.67 arcmin in Right Ascension and 0.33 arcmin in declination);

Distance of HR4173 from the Sun and relative movement

HR4173 is distant 1,278.43 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

392.16 pc
1,278.43 ly
-9 km/s
-0.028 arcsec/year
0.002 arcsec/year

Spectral properties of HR4173

HR4173 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 HR4173 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4173. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4173