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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sunny DaytimeWhat's Visible Now?
All Constellations » Aquarius » 


Altitude: -41.1°   Azimuth: 19.4°   Direction: North-North-East

HR8931 is a main-sequence star in the constellation of Aquarius.

HR8931 visual magnitude is 6.49. Because of its reltive faintness, HR8931 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 HR8931:


HR8931 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -41.1°
Azimuth: 19.4°
Direction: North-North-East

Celestial coordinates and finder chart of HR8931

HR8931 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8931 are provided in the following table:

23h 31m 31s
-04° 05’ 13”

The simplified sky map below shows the position of HR8931 in the sky:

Finder chart HR8931 star
Simplified finder chart for HR8931.

Visibility of HR8931 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 HR8931 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: 94.1°
Max altitude: 34.4°
Azimuth: 265.9°

Digitized Sky Survey image of HR8931

The image below is a photograph of HR8931 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 HR8931 is 0.175 arcsec per year in Right Ascension and -0.19 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8931 star
DSS2 image of HR8931. The red arrow shows the motion of HR8931 during the next 1000 years (2.92 arcmin in Right Ascension and -3.17 arcmin in declination);

Distance of HR8931 from the Sun and relative movement

HR8931 is distant 85.54 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

26.24 pc
85.54 ly
-11 km/s
0.175 arcsec/year
-0.19 arcsec/year

Spectral properties of HR8931

HR8931 belongs to spectral class F8 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR8931 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8931. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8931