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: 4:46  
clear_day Transit: 12:57  
SunsetSet: 21:08 south
wb_twilight Nautical TwilightWhat's Visible Now
All Constellations » Columba » 


Altitude: -52.6°   Azimuth: 268.0°   Direction: West

HR1981 is a main-sequence star in the constellation of Columba.

HR1981 visual magnitude is 6.25. Because of its reltive faintness, HR1981 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 HR1981:


HR1981 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -52.6°
Azimuth: 268.0°
Direction: West

Celestial coordinates and finder chart of HR1981

HR1981 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 HR1981 are provided in the following table:

05h 43m 30s
-39° 24’ 24”

The simplified sky map below shows the position of HR1981 in the sky:

Finder chart HR1981 star
Simplified finder chart for HR1981.

Visibility of HR1981 from your location

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

HR1981 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR1981

The image below is a photograph of HR1981 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 HR1981 is 0.051 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1981 star
DSS2 image of HR1981. The red arrow shows the motion of HR1981 during the next 10000 years (8.50 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of HR1981 from the Sun and relative movement

HR1981 is distant 174.05 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

53.39 pc
174.05 ly
13 km/s
0.051 arcsec/year
-0.002 arcsec/year

Spectral properties of HR1981

HR1981 belongs to spectral class F3 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1981 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR1981. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1981