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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: 7:52  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations » Puppis » 


Altitude: -37.0°   Azimuth: 233.0°   Direction: South-West

HR2281 is a supergiant star in the constellation of Puppis.

HR2281 visual magnitude is 7.04. Because of its reltive faintness, HR2281 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 HR2281:


HR2281 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -37.0°
Azimuth: 233.0°
Direction: South-West

Celestial coordinates and finder chart of HR2281

HR2281 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 HR2281 are provided in the following table:

06h 18m 46s
-50° 21’ 33”

The simplified sky map below shows the position of HR2281 in the sky:

Finder chart HR2281 star
Simplified finder chart for HR2281.

Visibility of HR2281 from your location

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

HR2281 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR2281

The image below is a photograph of HR2281 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 HR2281 is 0.006 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 HR2281 star
DSS2 image of HR2281. The red arrow shows the motion of HR2281 during the next 100000 years (10.00 arcmin in Right Ascension and 5.00 arcmin in declination);

Distance of HR2281 from the Sun and relative movement

HR2281 is distant 2,629.03 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

806.45 pc
2,629.03 ly
17 km/s
0.006 arcsec/year
0.003 arcsec/year

Spectral properties of HR2281

HR2281 belongs to spectral class G2 and has a luminosity class of I corresponding to a supergiant star.


The red dot in the diagram below shows where HR2281 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2281. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2281