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: 12:56  
SunsetSet: 21:07 south
sunny DaytimeWhat's Visible Now
All Constellations » Draco » 


Altitude: 34.3°   Azimuth: 4.0°   Direction: North

HR4665 is a variable hypergiant star in the constellation of Draco.

HR4665 visual magnitude is 6.29. Because of its reltive faintness, HR4665 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 HR4665:


HR4665 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 34.3°
Azimuth: 4.0°
Direction: North

Celestial coordinates and finder chart of HR4665

HR4665 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4665 are provided in the following table:

12h 15m 41s
+72° 33’ 02”

The simplified sky map below shows the position of HR4665 in the sky:

Finder chart HR4665 star
Simplified finder chart for HR4665.

Visibility of HR4665 from your location

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

HR4665 is circumpolar and transits at 19:23 UTC (altitude: 68.9°)

Digitized Sky Survey image of HR4665

The image below is a photograph of HR4665 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 HR4665 is -0.014 arcsec per year in Right Ascension and -0.035 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4665 star
DSS2 image of HR4665. The red arrow shows the motion of HR4665 during the next 10000 years (-2.33 arcmin in Right Ascension and -5.83 arcmin in declination);

Distance of HR4665 from the Sun and relative movement

HR4665 is distant 450.28 light years from the Sun and it is moving towards the Sun at the speed of 48 kilometers per second.

138.12 pc
450.28 ly
-48 km/s
-0.014 arcsec/year
-0.035 arcsec/year

Spectral properties of HR4665

HR4665 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4665 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4665. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4665