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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Sculptor » 


Altitude: -14.9°   Azimuth: 246.8°   Direction: West-South-West

HR42 is a variable giant star in the constellation of Sculptor.

HR42 visual magnitude is 5.94. Because of its reltive faintness, HR42 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 HR42:


HR42 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -14.9°
Azimuth: 246.8°
Direction: West-South-West

Celestial coordinates and finder chart of HR42

HR42 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 HR42 are provided in the following table:

00h 13m 42s
-26° 01’ 18”

The simplified sky map below shows the position of HR42 in the sky:

Finder chart HR42 star
Simplified finder chart for HR42.

Visibility of HR42 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 HR42 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: 116.0°
Max altitude: 12.5°
Azimuth: 244.0°

Digitized Sky Survey image of HR42

The image below is a photograph of HR42 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 HR42 is 0.026 arcsec per year in Right Ascension and -0.069 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR42 star
DSS2 image of HR42. The red arrow shows the motion of HR42 during the next 10000 years (4.33 arcmin in Right Ascension and -11.50 arcmin in declination);

Distance of HR42 from the Sun and relative movement

HR42 is distant 1,012.42 light years from the Sun and it is moving towards the Sun at the speed of 30 kilometers per second.

310.56 pc
1,012.42 ly
-30 km/s
0.026 arcsec/year
-0.069 arcsec/year

Spectral properties of HR42

HR42 belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR42 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR42. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR42