HR7477

Altitude: 17.0° Azimuth: 27.4° Direction: North-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 skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR7477:

Color of HR7477 ⬤

Magnitude of HR7477 6.47

Class Main-sequence

VISIBILITY RIGHT NOW

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

Altitude: 17.0°
Azimuth: 27.4°
Direction: North-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:

Right Ascension J2000 19h 37m 56s

Declination J2000 +49° 17’ 03”

Galactic Longitude 81.91°

Galactic Latitude 13.22°

Constellation Cygnus

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

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 02:44 UTC (altitude: 87.8°)

Digitized Sky Survey image of HR7477

The image below is a photograph of HR7477 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 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.

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);

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.

Distance (parsec) 154.32 pc

Distance (light year) 503.09 ly

Heliocentric radial velocity -85 km/s

Proper Motion RA 0.036 arcsec/year

Proper Motion Dec 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.

Absolute magnitude 0.53

Spectral Type G6V

Color Index (B-V) 0.99

Temperature of HR7477 4767K

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

Main star magnitude 6.47

Secondary star magnitude 9.37

Magnitude difference 2.9

Separation 29.6 arcsec

Alternative designations of HR7477

Henry Draper Catalogue HD185657

SAO Catalogue SAO48673

Hipparcos Catalogue HIP96572

Durchmusterung Catalogue BD+48 2922

In Evidence

Other stars in Cygnus