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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
SunriseRise: 6:35  
clear_day Transit: 12:10  
SunsetSet: 17:45
sunny DaytimeWhat's Visible Now?
All Constellations » Cygnus » 


Altitude: 69.6°   Azimuth: 224.4°   Direction: South-West

HR7550 is a double main-sequence star in the constellation of Cygnus.

HR7550 visual magnitude is 6.53. Because of its reltive faintness, HR7550 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR7550 is 0.085 arcsec per year in Right Ascension and 0.062 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7550 star
DSS2 image of HR7550. The red arrow shows the motion of HR7550 during the next 10000 years (14.17 arcmin in Right Ascension and 10.33 arcmin in declination);

Key facts about HR7550


HR7550 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 69.6°
Azimuth: 224.4°
Direction: South-West

Celestial coordinates and finder chart of HR7550

HR7550 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 HR7550 are provided in the following table:

19h 48m 43s
+35° 18’ 41”

The simplified sky map below shows the position of HR7550 in the sky:

Finder chart HR7550 star
Simplified finder chart for HR7550.

Visibility of HR7550 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 HR7550 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: 54.7°
Max altitude: 73.8°
Azimuth: 305.3°

Distance of HR7550 from the Sun and relative movement

HR7550 is distant 217.48 light years from the Sun and it is moving towards the Sun at the speed of 27 kilometers per second.

66.71 pc
217.48 ly
-27 km/s
0.085 arcsec/year
0.062 arcsec/year

Spectral properties of HR7550

HR7550 belongs to spectral class F4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR7550 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7550. Attribution: Richard Powell / CC BY-SA

HR7550 star system properties

HR7550 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR7550 double sysyem:

0.6 arcsec

Alternative designations of HR7550