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 Astronomical TwilightWhat's Visible Now
All Constellations » Puppis » 


Altitude: -72.1°   Azimuth: 286.7°   Direction: West-North-West

HR2668 is a multiple hypergiant star in the constellation of Puppis.

HR2668 visual magnitude is 6.79. Because of its reltive faintness, HR2668 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 HR2668:


HR2668 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -72.1°
Azimuth: 286.7°
Direction: West-North-West

Celestial coordinates and finder chart of HR2668

HR2668 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 HR2668 are provided in the following table:

07h 03m 58s
-43° 36’ 42”

The simplified sky map below shows the position of HR2668 in the sky:

Finder chart HR2668 star
Simplified finder chart for HR2668.

Visibility of HR2668 from your location

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

HR2668 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR2668

The image below is a photograph of HR2668 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 HR2668 is -0.109 arcsec per year in Right Ascension and 0.371 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR2668 star
DSS2 image of HR2668. The red arrow shows the motion of HR2668 during the next 1000 years (-1.82 arcmin in Right Ascension and 6.18 arcmin in declination);

Distance of HR2668 from the Sun and relative movement

HR2668 is distant 49.18 light years from the Sun and it is moving far from the Sun at the speed of 90 kilometers per second.

15.09 pc
49.18 ly
90 km/s
-0.109 arcsec/year
0.371 arcsec/year

Spectral properties of HR2668

HR2668 belongs to spectral class K0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR2668 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2668. Attribution: Richard Powell / CC BY-SA

HR2668 star system properties

HR2668 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR2668 double sysyem:

21 arcsec

Alternative designations of HR2668

Gl 264.1B