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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: 7:52  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
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All Constellations » Microscopium » 


Altitude: -43.2°   Azimuth: 251.2°   Direction: West-South-West

HR8042 is a double sub-giant star in the constellation of Microscopium.

HR8042 visual magnitude is 6.64. Because of its reltive faintness, HR8042 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 HR8042:


HR8042 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -43.2°
Azimuth: 251.2°
Direction: West-South-West

Celestial coordinates and finder chart of HR8042

HR8042 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 HR8042 are provided in the following table:

21h 02m 12s
-43° 00’ 06”

The simplified sky map below shows the position of HR8042 in the sky:

Finder chart HR8042 star
Simplified finder chart for HR8042.

Visibility of HR8042 from your location

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

HR8042 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR8042

The image below is a photograph of HR8042 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 HR8042 is 0.06 arcsec per year in Right Ascension and -0.103 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8042 star
DSS2 image of HR8042. The red arrow shows the motion of HR8042 during the next 1000 years (1.00 arcmin in Right Ascension and -1.72 arcmin in declination);

Distance of HR8042 from the Sun and relative movement

HR8042 is distant 265.47 light years from the Sun and it is moving towards the Sun at the speed of 31 kilometers per second.

81.43 pc
265.47 ly
-31 km/s
0.06 arcsec/year
-0.103 arcsec/year

Spectral properties of HR8042

HR8042 belongs to spectral class G3 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR8042 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR8042. Attribution: Richard Powell / CC BY-SA

HR8042 star system properties

HR8042 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR8042 double sysyem:

57.5 arcsec

Alternative designations of HR8042