HR7339

Altitude: -45.0° Azimuth: 300.6° Direction: West-North-West

HR7339 is a multiple main-sequence star in the constellation of Sagittarius.

HR7339 visual magnitude is 6.26. Because of its reltive faintness, HR7339 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 HR7339:

Color of HR7339 ⬤

Magnitude of HR7339 6.26

Class Main-sequence

VISIBILITY RIGHT NOW

HR7339 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -45.0°
Azimuth: 300.6°
Direction: West-North-West

Celestial coordinates and finder chart of HR7339

HR7339 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 HR7339 are provided in the following table:

Right Ascension J2000 19h 21m 37s

Declination J2000 -19° 14’ 03”

Galactic Longitude 18.74°

Galactic Latitude -15.1°

Constellation Sagittarius

The simplified sky map below shows the position of HR7339 in the sky:

Simplified finder chart for HR7339.

Visibility of HR7339 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 HR7339 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: 109.2° RISE 9:46

Max altitude: 19.3° TRANSIT 14:01

Azimuth: 250.8° SET 18:16

Digitized Sky Survey image of HR7339

The image below is a photograph of HR7339 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 HR7339 is 0.007 arcsec per year in Right Ascension and -0.001 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR7339. The red arrow shows the motion of HR7339 during the next 100000 years (11.67 arcmin in Right Ascension and -1.67 arcmin in declination);

Distance of HR7339 from the Sun and relative movement

HR7339 is distant 679.17 light years from the Sun and it is moving towards the Sun at the speed of 23 kilometers per second.

Distance (parsec) 208.33 pc

Distance (light year) 679.17 ly

Heliocentric radial velocity -23 km/s

Proper Motion RA 0.007 arcsec/year

Proper Motion Dec -0.001 arcsec/year

Spectral properties of HR7339

HR7339 belongs to spectral class B5 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -0.33

Spectral Type B5V

Color Index (B-V) -0.1

Temperature of HR7339 11573K

The red dot in the diagram below shows where HR7339 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7339. Attribution: Richard Powell / CC BY-SA

HR7339 star system properties

HR7339 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR7339 double sysyem:

Main star magnitude 6.26

Secondary star magnitude 9.86

Magnitude difference 3.6

Separation 90.8 arcsec

Alternative designations of HR7339

Henry Draper Catalogue HD181558

SAO Catalogue SAO162511

Hipparcos Catalogue HIP95159

Durchmusterung Catalogue BD-19 5412

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In Evidence

Other stars in Sagittarius