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: 4:52  
clear_day Transit: 12:55  
SunsetSet: 20:59 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Aquarius » 


HR8581 is a main-sequence star in the constellation of Aquarius.

HR8581 visual magnitude is 6.14. Because of its reltive faintness, HR8581 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 HR8581:

HR8581 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR8581

HR8581 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 HR8581 are provided in the following table:

22h 31m 18s
-06° 33’ 17”

The simplified sky map below shows the position of HR8581 in the sky:

Finder chart HR8581 star
Simplified finder chart for HR8581.

Visibility of HR8581 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 HR8581 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: 96.6°
Max altitude: 32.0°
Azimuth: 263.4°
HR8581 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR8581

The image below is a photograph of HR8581 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 HR8581 is 0.173 arcsec per year in Right Ascension and -0.106 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8581 star
DSS2 image of HR8581. The red arrow shows the motion of HR8581 during the next 1000 years (2.88 arcmin in Right Ascension and -1.77 arcmin in declination);

Distance of HR8581 from the Sun and relative movement

HR8581 is distant 83.21 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

25.52 pc
83.21 ly
-6 km/s
0.173 arcsec/year
-0.106 arcsec/year

Spectral properties of HR8581

HR8581 belongs to spectral class F7 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR8581 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8581. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8581

Gl 862.1