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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:51  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Cygnus » 


Altitude: 34.7°   Azimuth: 317.6°   Direction: North-West

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:


HR7509 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 34.7°
Azimuth: 317.6°
Direction: North-West

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:

19h 42m 04s
+55° 27’ 47”

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

Finder chart HR7509 star
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 14:29 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.

Image of HR7509 star
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.

235.29 pc
767.06 ly
-28 km/s
0.013 arcsec/year
-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.


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

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

Alternative designations of HR7509