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: 6:59  
clear_day Transit: 12:48  
SunsetSet: 18:36 south
sunny DaytimeWhat's Visible Now
All Constellations » Auriga » 


Altitude: 45.2°   Azimuth: 284.8°   Direction: West-North-West

HR2147 is a hypergiant star in the constellation of Auriga.

HR2147 visual magnitude is 6.12. Because of its reltive faintness, HR2147 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 HR2147:


HR2147 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 45.2°
Azimuth: 284.8°
Direction: West-North-West

Celestial coordinates and finder chart of HR2147

HR2147 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 HR2147 are provided in the following table:

06h 07m 26s
+41° 51’ 15”

The simplified sky map below shows the position of HR2147 in the sky:

Finder chart HR2147 star
Simplified finder chart for HR2147.

Visibility of HR2147 from your location

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

HR2147 is circumpolar and transits at 05:28 UTC (altitude: 80.4°)

Digitized Sky Survey image of HR2147

The image below is a photograph of HR2147 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 HR2147 is 0.007 arcsec per year in Right Ascension and -0.021 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2147 star
DSS2 image of HR2147. The red arrow shows the motion of HR2147 during the next 10000 years (1.17 arcmin in Right Ascension and -3.50 arcmin in declination);

Distance of HR2147 from the Sun and relative movement

HR2147 is distant 833.76 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

255.75 pc
833.76 ly
6 km/s
0.007 arcsec/year
-0.021 arcsec/year

Spectral properties of HR2147

HR2147 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR2147 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2147. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2147