HR6399

HR6399 is a variable and multiple giant star in the constellation of Hercules.

HR6399 visual magnitude is 6.04. Because of its reltive faintness, HR6399 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 HR6399:

Color of HR6399 ⬤

Magnitude of HR6399 6.04

Class Giant

VISIBILITY RIGHT NOW HR6399 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 80°.

Celestial coordinates and finder chart of HR6399

HR6399 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6399 are provided in the following table:

Right Ascension J2000 17h 11m 40s

Declination J2000 +49° 44’ 48”

Galactic Longitude 76.38°

Galactic Latitude 36.19°

Constellation Hercules

The simplified sky map below shows the position of HR6399 in the sky:

Simplified finder chart for HR6399.

Visibility of HR6399 from your location

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

HR6399 is circumpolar and transits at 04:50 UTC (altitude: 88.3°)

Digitized Sky Survey image of HR6399

The image below is a photograph of HR6399 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 HR6399 is 0.02 arcsec per year in Right Ascension and 0.035 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR6399. The red arrow shows the motion of HR6399 during the next 10000 years (3.33 arcmin in Right Ascension and 5.83 arcmin in declination);

Distance of HR6399 from the Sun and relative movement

HR6399 is distant 315.59 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

Distance (parsec) 96.81 pc

Distance (light year) 315.59 ly

Heliocentric radial velocity -11 km/s

Proper Motion RA 0.02 arcsec/year

Proper Motion Dec 0.035 arcsec/year

Spectral properties of HR6399

HR6399 belongs to spectral class A5 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 1.11

Spectral Type A5III

Color Index (B-V)

Temperature of HR6399 10125K

The red dot in the diagram below shows where HR6399 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6399. Attribution: Richard Powell / CC BY-SA

HR6399 star system properties

HR6399 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR6399 double sysyem:

Main star magnitude 6.04

Secondary star magnitude 9.44

Magnitude difference 3.4

Separation 5.2 arcsec

Alternative designations of HR6399

Henry Draper Catalogue HD155860

SAO Catalogue SAO46561

Hipparcos Catalogue HIP84108

Durchmusterung Catalogue BD+49 2604

General Catalogue of Variable Stars 8327

Aitken Double Star Catalogue ADS10397

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In Evidence

Other stars in Hercules