Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
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All Constellations » Puppis » 


HR3142 is a sub-giant star in the constellation of Puppis.

HR3142 visual magnitude is 6.32. Because of its reltive faintness, HR3142 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 HR3142:

HR3142 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR3142

HR3142 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 HR3142 are provided in the following table:

07h 59m 12s
-49° 58’ 36”

The simplified sky map below shows the position of HR3142 in the sky:

Finder chart HR3142 star
Simplified finder chart for HR3142.

Visibility of HR3142 from your location

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

HR3142 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR3142

The image below is a photograph of HR3142 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 HR3142 is 0 arcsec per year in Right Ascension and 0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3142 star
DSS2 image of HR3142. The red arrow shows the motion of HR3142 during the next 10000 years (0.00 arcmin in Right Ascension and 2.50 arcmin in declination);

Distance of HR3142 from the Sun and relative movement

HR3142 is distant 1,283.46 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

393.70 pc
1,283.46 ly
13 km/s
0.015 arcsec/year

Spectral properties of HR3142

HR3142 belongs to spectral class B2 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR3142 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3142. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3142