HR7509

HR7509 is a variable giant star in the constellation of Cygnus.

HR7509 visual magnitude is 6.48. Because of its reltive faintness, HR7509 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 HR7509:

Color of HR7509 ⬤

Magnitude of HR7509 6.48

Class Giant

VISIBILITY RIGHT NOW HR7509 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 50°.

Celestial coordinates and finder chart of HR7509

HR7509 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 HR7509 are provided in the following table:

Right Ascension J2000 19h 42m 04s

Declination J2000 +55° 27’ 47”

Galactic Longitude 87.93°

Galactic Latitude 15.37°

Constellation Cygnus

The simplified sky map below shows the position of HR7509 in the sky:

Simplified finder chart for HR7509.

Visibility of HR7509 from your location

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

HR7509 is circumpolar and transits at 03:20 UTC (altitude: 86.0°)

Digitized Sky Survey image of HR7509

The image below is a photograph of HR7509 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 HR7509 is 0.013 arcsec per year in Right Ascension and -0.039 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7509. The red arrow shows the motion of HR7509 during the next 10000 years (2.17 arcmin in Right Ascension and -6.50 arcmin in declination);

Distance of HR7509 from the Sun and relative movement

HR7509 is distant 767.06 light years from the Sun and it is moving towards the Sun at the speed of 28 kilometers per second.

Distance (parsec) 235.29 pc

Distance (light year) 767.06 ly

Heliocentric radial velocity -28 km/s

Proper Motion RA 0.013 arcsec/year

Proper Motion Dec -0.039 arcsec/year

Spectral properties of HR7509

HR7509 belongs to spectral class M5 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.38

Spectral Type M5III

Color Index (B-V) 1.61

Temperature of HR7509 3635K

The red dot in the diagram below shows where HR7509 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7509. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7509

Henry Draper Catalogue HD186532

SAO Catalogue SAO31906

Hipparcos Catalogue HIP96919

Durchmusterung Catalogue BD+55 2245

General Catalogue of Variable Stars V1351 Cyg

In Evidence

Other stars in Cygnus