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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
SunriseRise: 6:48  
clear_day Transit: 12:11  
SunsetSet: 17:34
sleep NighttimeWhat's Visible Now?
All Constellations » Ophiuchus » 

HR6686

Altitude: -17.9°   Azimuth: 73.5°   Direction: East-North-East

HR6686 is a giant star in the constellation of Ophiuchus.

HR6686 visual magnitude is 5.47. Because of its reltive faintness, HR6686 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR6686 is -0.012 arcsec per year in Right Ascension and -0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6686 star
DSS2 image of HR6686. The red arrow shows the motion of HR6686 during the next 10000 years (-2.00 arcmin in Right Ascension and -1.33 arcmin in declination);

Key facts about HR6686

5.47
Giant

HR6686 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -17.9°
Azimuth: 73.5°
Direction: East-North-East

Celestial coordinates and finder chart of HR6686

HR6686 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 HR6686 are provided in the following table:

17h 56m 47s
-04° 04’ 54”
22.94°
10.21°
Ophiuchus

The simplified sky map below shows the position of HR6686 in the sky:

Finder chart HR6686 star
Simplified finder chart for HR6686.

Visibility of HR6686 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 HR6686 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: 94.1°
Max altitude: 34.4°
Azimuth: 265.9°

Distance of HR6686 from the Sun and relative movement

HR6686 is distant 425.59 light years from the Sun and it is moving towards the Sun at the speed of 39 kilometers per second.

130.55 pc
425.59 ly
-39 km/s
-0.012 arcsec/year
-0.008 arcsec/year

Spectral properties of HR6686

HR6686 belongs to spectral class G9

-0.11
G9
4389K

The red dot in the diagram below shows where HR6686 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6686. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6686

SAO141979
SAO141979