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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: 7:51  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Scorpius » 


Altitude: 2.3°   Azimuth: 165.5°   Direction: South-South-East

HR6663 is a variable star in the constellation of Scorpius.

HR6663 visual magnitude is 6.42. Because of its reltive faintness, HR6663 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 HR6663:


HR6663 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 2.3°
Azimuth: 165.5°
Direction: South-South-East

Celestial coordinates and finder chart of HR6663

HR6663 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 HR6663 are provided in the following table:

17h 53m 58s
-34° 49’ 54”

The simplified sky map below shows the position of HR6663 in the sky:

Finder chart HR6663 star
Simplified finder chart for HR6663.

Visibility of HR6663 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 HR6663 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: 124.8°
Max altitude: 3.7°
Azimuth: 235.2°

Digitized Sky Survey image of HR6663

The image below is a photograph of HR6663 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 HR6663 is 0.007 arcsec per year in Right Ascension and -0.023 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6663 star
DSS2 image of HR6663. The red arrow shows the motion of HR6663 during the next 10000 years (1.17 arcmin in Right Ascension and -3.83 arcmin in declination);

Distance of HR6663 from the Sun and relative movement

HR6663 is distant 973.13 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.

298.51 pc
973.13 ly
-17 km/s
0.007 arcsec/year
-0.023 arcsec/year

Spectral properties of HR6663

HR6663 belongs to spectral class A HR6663 is also a Si chemically peculiar star.


The red dot in the diagram below shows where HR6663 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6663. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6663