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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
SunriseRise: 6:59  
clear_day Transit: 12:12  
SunsetSet: 17:25
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Monoceros » 


Altitude: 21.7°   Azimuth: 138.2°   Direction: South-East

HR2381 is a giant star in the constellation of Monoceros.

HR2381 visual magnitude is 5.43. Because of its reltive faintness, HR2381 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR2381 is -0.012 arcsec per year in Right Ascension and -0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2381 star
DSS2 image of HR2381. The red arrow shows the motion of HR2381 during the next 10000 years (-2.00 arcmin in Right Ascension and -1.33 arcmin in declination);

Key facts about HR2381


HR2381 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 21.7°
Azimuth: 138.2°
Direction: South-East

Celestial coordinates and finder chart of HR2381

HR2381 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 HR2381 are provided in the following table:

06h 31m 50s
-08° 09’ 29”

The simplified sky map below shows the position of HR2381 in the sky:

Finder chart HR2381 star
Simplified finder chart for HR2381.

Visibility of HR2381 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 HR2381 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: 98.2°
Max altitude: 30.4°
Azimuth: 261.8°

Distance of HR2381 from the Sun and relative movement

HR2381 is distant 869.33 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

266.67 pc
869.33 ly
3 km/s
-0.012 arcsec/year
-0.008 arcsec/year

Spectral properties of HR2381

HR2381 belongs to spectral class K2


The red dot in the diagram below shows where HR2381 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2381. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2381