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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: 6:42  
clear_day Transit: 12:10  
SunsetSet: 17:40
sleep NighttimeWhat's Visible Now?
All Constellations » Cygnus » 


Altitude: 24.3°   Azimuth: 39.8°   Direction: North-East

HR7477 is a multiple main-sequence star in the constellation of Cygnus.

HR7477 visual magnitude is 6.47. Because of its reltive faintness, HR7477 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 HR7477 is 0.036 arcsec per year in Right Ascension and 0.144 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR7477 star
DSS2 image of HR7477. The red arrow shows the motion of HR7477 during the next 1000 years (0.60 arcmin in Right Ascension and 2.40 arcmin in declination);

Key facts about HR7477


HR7477 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 24.3°
Azimuth: 39.8°
Direction: North-East

Celestial coordinates and finder chart of HR7477

HR7477 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 HR7477 are provided in the following table:

19h 37m 56s
+49° 17’ 03”

The simplified sky map below shows the position of HR7477 in the sky:

Finder chart HR7477 star
Simplified finder chart for HR7477.

Visibility of HR7477 from your location

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

HR7477 is circumpolar and transits at 08:55 UTC (altitude: 87.8°)

Distance of HR7477 from the Sun and relative movement

HR7477 is distant 503.09 light years from the Sun and it is moving towards the Sun at the speed of 85 kilometers per second.

154.32 pc
503.09 ly
-85 km/s
0.036 arcsec/year
0.144 arcsec/year

Spectral properties of HR7477

HR7477 belongs to spectral class G6 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR7477 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7477. Attribution: Richard Powell / CC BY-SA

HR7477 star system properties

HR7477 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR7477 double sysyem:

29.6 arcsec

Alternative designations of HR7477