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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: 7:43  
clear_day Transit: 11:47  
SunsetSet: 15:52 south
sleep NighttimeWhat's Visible Now?
All Constellations » Hercules » 


Altitude: -19.8°   Azimuth: 20.5°   Direction: North-North-East

HR6551 is a main-sequence star in the constellation of Hercules.

HR6551 visual magnitude is 6.4. Because of its reltive faintness, HR6551 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 HR6551:


HR6551 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -19.8°
Azimuth: 20.5°
Direction: North-North-East

Celestial coordinates and finder chart of HR6551

HR6551 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6551 are provided in the following table:

17h 34m 27s
+16° 30’ 14”

The simplified sky map below shows the position of HR6551 in the sky:

Finder chart HR6551 star
Simplified finder chart for HR6551.

Visibility of HR6551 from your location

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

Today's HR6551 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 73.5°
Max altitude: 55.0°
Azimuth: 286.5°

Digitized Sky Survey image of HR6551

The image below is a photograph of HR6551 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 HR6551 is -0.004 arcsec per year in Right Ascension and -0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6551 star
DSS2 image of HR6551. The red arrow shows the motion of HR6551 during the next 10000 years (-0.67 arcmin in Right Ascension and -2.50 arcmin in declination);

Distance of HR6551 from the Sun and relative movement

HR6551 is distant 589.51 light years from the Sun and it is moving towards the Sun at the speed of 41 kilometers per second.

180.83 pc
589.51 ly
-41 km/s
-0.004 arcsec/year
-0.015 arcsec/year

Spectral properties of HR6551

HR6551 belongs to spectral class A8 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR6551 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6551. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6551