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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: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
sunny DaytimeWhat's Visible Now?
All Constellations » Vela » 


Altitude: -71.5°   Azimuth: 69.4°   Direction: East-North-East

HR3668 is a giant star in the constellation of Vela.

HR3668 visual magnitude is 6.29. Because of its reltive faintness, HR3668 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR3668 is -0.017 arcsec per year in Right Ascension and 0.054 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3668 star
DSS2 image of HR3668. The red arrow shows the motion of HR3668 during the next 10000 years (-2.83 arcmin in Right Ascension and 9.00 arcmin in declination);

Key facts about HR3668


HR3668 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -71.5°
Azimuth: 69.4°
Direction: East-North-East

Celestial coordinates and finder chart of HR3668

HR3668 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 HR3668 are provided in the following table:

09h 13m 18s
-42° 16’ 24”

The simplified sky map below shows the position of HR3668 in the sky:

Finder chart HR3668 star
Simplified finder chart for HR3668.

Visibility of HR3668 from your location

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

HR3668 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR3668 from the Sun and relative movement

HR3668 is distant 469.06 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

143.88 pc
469.06 ly
29 km/s
-0.017 arcsec/year
0.054 arcsec/year

Spectral properties of HR3668

HR3668 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR3668 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3668. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3668