HR6686

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 skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR6686:

Color of HR6686 ⬤

Magnitude of HR6686 5.47

Class Giant

VISIBILITY RIGHT NOW HR6686 is below the horizon from Greenwich, United Kingdom [change].

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:

Right Ascension J2000 17h 56m 47s

Declination J2000 -04° 04’ 54”

Galactic Longitude 22.94°

Galactic Latitude 10.21°

Constellation Ophiuchus

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

Simplified finder chart for HR6686.

Visibility of HR6686 from your location

Location: Greenwich, United Kingdom [change]
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 [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 94.1° RISE 0:09

Max altitude: 34.4° TRANSIT 5:47

Azimuth: 265.9° SET 11:24

RIGHT NOW HR6686 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR6686

The image below is a photograph of HR6686 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 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.

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);

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.

Distance (parsec) 130.55 pc

Distance (light year) 425.59 ly

Heliocentric radial velocity -39 km/s

Proper Motion RA -0.012 arcsec/year

Proper Motion Dec -0.008 arcsec/year

Spectral properties of HR6686

HR6686 belongs to spectral class G9

Absolute magnitude -0.11

Spectral Type G9

Color Index (B-V) 1.16

Temperature of HR6686 4389K

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

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

Alternative designations of HR6686

Henry Draper Catalogue HD163532

SAO Catalogue SAO141979

Hipparcos Catalogue HIP87847

Durchmusterung Catalogue BD-04 4376

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In Evidence

Other stars in Ophiuchus