We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:48  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Ursa Minor » 


Altitude: 55.0°   Azimuth: 17.5°   Direction: North-North-East

HR6173 is a hypergiant star in the constellation of Ursa Minor.

HR6173 visual magnitude is 5.56. Because of its reltive faintness, HR6173 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 HR6173:


HR6173 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 55.0°
Azimuth: 17.5°
Direction: North-North-East

Celestial coordinates and finder chart of HR6173

HR6173 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6173 are provided in the following table:

16h 25m 43s
+78° 57’ 50”
Ursa Minor

The simplified sky map below shows the position of HR6173 in the sky:

Finder chart HR6173 star
Simplified finder chart for HR6173.

Visibility of HR6173 from your location

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

HR6173 is circumpolar and transits at 11:25 UTC (altitude: 62.5°)

Digitized Sky Survey image of HR6173

The image below is a photograph of HR6173 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 HR6173 is -0.115 arcsec per year in Right Ascension and 0.108 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR6173 star
DSS2 image of HR6173. The red arrow shows the motion of HR6173 during the next 1000 years (-1.92 arcmin in Right Ascension and 1.80 arcmin in declination);

Distance of HR6173 from the Sun and relative movement

HR6173 is distant 138.08 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

42.35 pc
138.08 ly
-12 km/s
-0.115 arcsec/year
0.108 arcsec/year

Spectral properties of HR6173

HR6173 belongs to spectral class F0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR6173 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR6173. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6173