HR6441

HR6441 is a double sub-giant star in the constellation of Ophiuchus.

HR6441 visual magnitude is 6.52. Because of its reltive faintness, HR6441 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 HR6441:

Color of HR6441 ⬤

Magnitude of HR6441 6.52

Class Sub-giant

VISIBILITY RIGHT NOW HR6441 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR6441

HR6441 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 HR6441 are provided in the following table:

Right Ascension J2000 17h 20m 34s

Declination J2000 -19° 19’ 58”

Galactic Longitude 5.04°

Galactic Latitude 9.98°

Constellation Ophiuchus

The simplified sky map below shows the position of HR6441 in the sky:

Simplified finder chart for HR6441.

Visibility of HR6441 from your location

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

Today's HR6441 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 109.3° RISE 1:45

Max altitude: 19.2° TRANSIT 5:59

Azimuth: 250.7° SET 10:13

RIGHT NOW HR6441 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR6441

The image below is a photograph of HR6441 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 HR6441 is -0.151 arcsec per year in Right Ascension and -0.102 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR6441. The red arrow shows the motion of HR6441 during the next 1000 years (-2.52 arcmin in Right Ascension and -1.70 arcmin in declination);

Distance of HR6441 from the Sun and relative movement

HR6441 is distant 159.73 light years from the Sun and it is moving towards the Sun at the speed of 69 kilometers per second.

Distance (parsec) 49.00 pc

Distance (light year) 159.73 ly

Heliocentric radial velocity -69 km/s

Proper Motion RA -0.151 arcsec/year

Proper Motion Dec -0.102 arcsec/year

Spectral properties of HR6441

HR6441 belongs to spectral class G3 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 3.07

Spectral Type G3IV

Color Index (B-V) 0.58

Temperature of HR6441 6047K

The red dot in the diagram below shows where HR6441 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6441. Attribution: Richard Powell / CC BY-SA

HR6441 star system properties

HR6441 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR6441 double sysyem:

Main star magnitude 6.52

Secondary star magnitude 14.02

Magnitude difference 7.5

Separation 5.1 arcsec

Alternative designations of HR6441

Henry Draper Catalogue HD156846

SAO Catalogue SAO160474

Hipparcos Catalogue HIP84856

Durchmusterung Catalogue BD-19 4605

Aitken Double Star Catalogue ADS10476

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Other stars in Ophiuchus