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: 7:44  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Microscopium » 


Altitude: -48.7°   Azimuth: 93.7°   Direction: East

HR7971 is a bright giant star in the constellation of Microscopium.

HR7971 visual magnitude is 5.52. Because of its reltive faintness, HR7971 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 HR7971:

Bright giant

HR7971 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -48.7°
Azimuth: 93.7°
Direction: East

Celestial coordinates and finder chart of HR7971

HR7971 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 HR7971 are provided in the following table:

20h 51m 00s
-37° 54’ 47”

The simplified sky map below shows the position of HR7971 in the sky:

Finder chart HR7971 star
Simplified finder chart for HR7971.

Visibility of HR7971 from your location

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

Today's HR7971 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 127.9°
Max altitude: 0.6°
Azimuth: 232.1°

Digitized Sky Survey image of HR7971

The image below is a photograph of HR7971 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 HR7971 is -0.011 arcsec per year in Right Ascension and -0.022 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7971 star
DSS2 image of HR7971. The red arrow shows the motion of HR7971 during the next 10000 years (-1.83 arcmin in Right Ascension and -3.67 arcmin in declination);

Distance of HR7971 from the Sun and relative movement

HR7971 is distant 626.92 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

192.31 pc
626.92 ly
17 km/s
-0.011 arcsec/year
-0.022 arcsec/year

Spectral properties of HR7971

HR7971 belongs to spectral class K3 and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where HR7971 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR7971. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7971