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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: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sleep NighttimeWhat's Visible Now?
All Constellations » Monoceros » 


Altitude: 13.7°   Azimuth: 240.0°   Direction: West-South-West

HR2142 is a variable main-sequence star in the constellation of Monoceros.

HR2142 visual magnitude is 5.21. Because of its reltive faintness, HR2142 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 HR2142:


HR2142 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 13.7°
Azimuth: 240.0°
Direction: West-South-West

Celestial coordinates and finder chart of HR2142

HR2142 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2142 are provided in the following table:

06h 04m 13s
-06° 42’ 33”

The simplified sky map below shows the position of HR2142 in the sky:

Finder chart HR2142 star
Simplified finder chart for HR2142.

Visibility of HR2142 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 HR2142 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: 96.7°
Max altitude: 31.8°
Azimuth: 263.3°

Digitized Sky Survey image of HR2142

The image below is a photograph of HR2142 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 HR2142 is -0.005 arcsec per year in Right Ascension and -0.003 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR2142 star
DSS2 image of HR2142. The red arrow shows the motion of HR2142 during the next 100000 years (-8.33 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR2142 from the Sun and relative movement

HR2142 is distant 918.31 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

281.69 pc
918.31 ly
25 km/s
-0.005 arcsec/year
-0.003 arcsec/year

Spectral properties of HR2142

HR2142 belongs to spectral class B2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR2142 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2142. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2142