HR6617

HR6617 is a variable supergiant star in the constellation of Sagittarius.

HR6617 visual magnitude is 6.18. Because of its reltive faintness, HR6617 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 HR6617:

Color of HR6617 ⬤

Magnitude of HR6617 6.18

Class Supergiant

VISIBILITY RIGHT NOW HR6617 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 16°.

Celestial coordinates and finder chart of HR6617

HR6617 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 HR6617 are provided in the following table:

Right Ascension J2000 17h 47m 45s

Declination J2000 -22° 28’ 41”

Galactic Longitude 5.77°

Galactic Latitude 2.94°

Constellation Sagittarius

The simplified sky map below shows the position of HR6617 in the sky:

Simplified finder chart for HR6617.

Visibility of HR6617 from your location

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

Today's HR6617 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 112.5° RISE 1:52

Max altitude: 16.0° TRANSIT 5:45

Azimuth: 247.5° SET 9:39

RIGHT NOW HR6617 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR6617

The image below is a photograph of HR6617 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 HR6617 is 0.003 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR6617. The red arrow shows the motion of HR6617 during the next 10000 years (0.50 arcmin in Right Ascension and -1.83 arcmin in declination);

Distance of HR6617 from the Sun and relative movement

HR6617 is distant 1,811.11 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

Distance (parsec) 555.56 pc

Distance (light year) 1,811.11 ly

Heliocentric radial velocity -22 km/s

Proper Motion RA 0.003 arcsec/year

Proper Motion Dec -0.011 arcsec/year

Spectral properties of HR6617

HR6617 belongs to spectral class G6 and has a luminosity class of I corresponding to a supergiant star.

Absolute magnitude -2.54

Spectral Type G6I

Color Index (B-V) 1.49

Temperature of HR6617 3809K

The red dot in the diagram below shows where HR6617 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6617. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6617

Henry Draper Catalogue HD161664

SAO Catalogue SAO185765

Hipparcos Catalogue HIP87099

Durchmusterung Catalogue BD-22 4423

General Catalogue of Variable Stars 9682

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Other stars in Sagittarius