Your Guide to the Solar System and the Night Sky
This site is free and ad-free thanks to the support of our users. If you can, please consider a donation.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:47  
clear_day Transit: 12:50  
SunsetSet: 18:52 south
sleep NighttimeWhat's Visible Now
All Constellations » Hercules » 


Altitude: 61.6°   Azimuth: 261.3°   Direction: West

HR6669 is a hypergiant star in the constellation of Hercules.

HR6669 visual magnitude is 6.46. Because of its reltive faintness, HR6669 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 HR6669:


HR6669 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 61.6°
Azimuth: 261.3°
Direction: West

Celestial coordinates and finder chart of HR6669

HR6669 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6669 are provided in the following table:

17h 51m 14s
+40° 04’ 20”

The simplified sky map below shows the position of HR6669 in the sky:

Finder chart HR6669 star
Simplified finder chart for HR6669.

Visibility of HR6669 from your location

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

HR6669 is circumpolar and transits at 17:38 UTC (altitude: 78.6°)

Digitized Sky Survey image of HR6669

The image below is a photograph of HR6669 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 HR6669 is -0.012 arcsec per year in Right Ascension and 0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6669 star
DSS2 image of HR6669. The red arrow shows the motion of HR6669 during the next 10000 years (-2.00 arcmin in Right Ascension and 2.00 arcmin in declination);

Distance of HR6669 from the Sun and relative movement

HR6669 is distant 108.92 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

33.41 pc
108.92 ly
2 km/s
-0.012 arcsec/year
0.012 arcsec/year

Spectral properties of HR6669

HR6669 belongs to spectral class G0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR6669 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6669. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6669