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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
SunriseRise: 6:48  
clear_day Transit: 12:11  
SunsetSet: 17:34
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All Constellations » Tucana » 

HR8531

Altitude: -68.7°   Azimuth: 238.8°   Direction: West-South-West

HR8531 is a double sub-giant star in the constellation of Tucana.

HR8531 visual magnitude is 5.32. Because of its reltive faintness, HR8531 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR8531 is 0.143 arcsec per year in Right Ascension and -0.343 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8531 star
DSS2 image of HR8531. The red arrow shows the motion of HR8531 during the next 1000 years (2.38 arcmin in Right Ascension and -5.72 arcmin in declination);

Key facts about HR8531

5.32
Sub-giant

HR8531 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -68.7°
Azimuth: 238.8°
Direction: West-South-West

Celestial coordinates and finder chart of HR8531

HR8531 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 HR8531 are provided in the following table:

22h 24m 56s
-57° 47’ 49”
332.61°
-50.04°
Tucana

The simplified sky map below shows the position of HR8531 in the sky:

Finder chart HR8531 star
Simplified finder chart for HR8531.

Visibility of HR8531 from your location

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

HR8531 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR8531 from the Sun and relative movement

HR8531 is distant 66.79 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

20.49 pc
66.79 ly
8 km/s
0.143 arcsec/year
-0.343 arcsec/year

Spectral properties of HR8531

HR8531 belongs to spectral class G3 and has a luminosity class of IV corresponding to a sub-giant star.

3.76
G3IV
5706K

The red dot in the diagram below shows where HR8531 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR8531. Attribution: Richard Powell / CC BY-SA

HR8531 star system properties

HR8531 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR8531 double sysyem:

5.32
12.92
7.6
81 arcsec

Alternative designations of HR8531

SAO247441
SAO247441