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: 4:50  
clear_day Transit: 12:56  
SunsetSet: 21:02 south
sunny DaytimeWhat's Visible Now
All Constellations » Serpens » 


HR6681 is a multiple main-sequence star in the constellation of Serpens.

HR6681 visual magnitude is 5.89. Because of its reltive faintness, HR6681 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 HR6681:

HR6681 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR6681

HR6681 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 HR6681 are provided in the following table:

17h 56m 18s
-15° 48’ 44”

The simplified sky map below shows the position of HR6681 in the sky:

Finder chart HR6681 star
Simplified finder chart for HR6681.

Visibility of HR6681 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 HR6681 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: 105.8°
Max altitude: 22.7°
Azimuth: 254.2°
HR6681 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR6681

The image below is a photograph of HR6681 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 HR6681 is -0.01 arcsec per year in Right Ascension and -0.063 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6681 star
DSS2 image of HR6681. The red arrow shows the motion of HR6681 during the next 10000 years (-1.67 arcmin in Right Ascension and -10.50 arcmin in declination);

Distance of HR6681 from the Sun and relative movement

HR6681 is distant 248.67 light years from the Sun and it is moving towards the Sun at the speed of 24 kilometers per second.

76.28 pc
248.67 ly
-24 km/s
-0.01 arcsec/year
-0.063 arcsec/year

Spectral properties of HR6681

HR6681 belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR6681 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6681. Attribution: Richard Powell / CC BY-SA

HR6681 star system properties

HR6681 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR6681 double sysyem:

20.6 arcsec

Alternative designations of HR6681