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: 4:45  
clear_day Transit: 12:57  
SunsetSet: 21:10 south
wb_twilight Nautical TwilightWhat's Visible Now
All Constellations » Microscopium » 


Altitude: 7.1°   Azimuth: 159.4°   Direction: South-South-East

HR8142 is a sub-giant star in the constellation of Microscopium.

HR8142 visual magnitude is 6.4. Because of its reltive faintness, HR8142 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 HR8142:


HR8142 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 7.1°
Azimuth: 159.4°
Direction: South-South-East

Celestial coordinates and finder chart of HR8142

HR8142 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 HR8142 are provided in the following table:

21h 18m 54s
-28° 45’ 56”

The simplified sky map below shows the position of HR8142 in the sky:

Finder chart HR8142 star
Simplified finder chart for HR8142.

Visibility of HR8142 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 HR8142 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: 118.8°
Max altitude: 9.8°
Azimuth: 241.2°
HR8142 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR8142

The image below is a photograph of HR8142 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 HR8142 is -0.181 arcsec per year in Right Ascension and -0.058 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8142 star
DSS2 image of HR8142. The red arrow shows the motion of HR8142 during the next 1000 years (-3.02 arcmin in Right Ascension and -0.97 arcmin in declination);

Distance of HR8142 from the Sun and relative movement

HR8142 is distant 403.47 light years from the Sun and it is moving far from the Sun at the speed of 38 kilometers per second.

123.76 pc
403.47 ly
38 km/s
-0.181 arcsec/year
-0.058 arcsec/year

Spectral properties of HR8142

HR8142 belongs to spectral class G8 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR8142 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR8142. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8142