HR6861

Altitude: 0.6° Azimuth: 133.6° Direction: South-East

HR6861 is a variable giant star in the constellation of Sagittarius.

HR6861 visual magnitude is 6.25. Because of its reltive faintness, HR6861 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 HR6861:

Color of HR6861 ⬤

Magnitude of HR6861 6.25

Class Giant

VISIBILITY RIGHT NOW

HR6861 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 0.6°
Azimuth: 133.6°
Direction: South-East

Celestial coordinates and finder chart of HR6861

HR6861 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 HR6861 are provided in the following table:

Right Ascension J2000 18h 21m 31s

Declination J2000 -24° 54’ 53”

Galactic Longitude 7.44°

Galactic Latitude -4.99°

Constellation Sagittarius

The simplified sky map below shows the position of HR6861 in the sky:

Simplified finder chart for HR6861.

Visibility of HR6861 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 HR6861 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: 114.9° RISE 15:40

Max altitude: 13.6° TRANSIT 19:16

Azimuth: 245.1° SET 22:52

Digitized Sky Survey image of HR6861

The image below is a photograph of HR6861 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 HR6861 is 0.007 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR6861. The red arrow shows the motion of HR6861 during the next 100000 years (11.67 arcmin in Right Ascension and 13.33 arcmin in declination);

Distance of HR6861 from the Sun and relative movement

HR6861 is distant 1,164.29 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 357.14 pc

Distance (light year) 1,164.29 ly

Heliocentric radial velocity 3 km/s

Proper Motion RA 0.007 arcsec/year

Proper Motion Dec 0.008 arcsec/year

Spectral properties of HR6861

HR6861 belongs to spectral class M5 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -1.51

Spectral Type M5III

Color Index (B-V) 1.84

Temperature of HR6861 3345K

The red dot in the diagram below shows where HR6861 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6861. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6861

Henry Draper Catalogue HD168574

SAO Catalogue SAO186699

Hipparcos Catalogue HIP89980

Durchmusterung Catalogue CD-2414219

General Catalogue of Variable Stars V4028 Sgr

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In Evidence

Other stars in Sagittarius