HR7737

Altitude: 64.4° Azimuth: 262.5° Direction: West

HR7737 is a multiple sub-giant star in the constellation of Cygnus.

HR7737 visual magnitude is 6.71. Because of its reltive faintness, HR7737 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 HR7737:

Color of HR7737 ⬤

Magnitude of HR7737 6.71

Class Sub-giant

VISIBILITY RIGHT NOW

HR7737 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 64.4°
Azimuth: 262.5°
Direction: West

Celestial coordinates and finder chart of HR7737

HR7737 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 HR7737 are provided in the following table:

Right Ascension J2000 20h 14m 21s

Declination J2000 +42° 06’ 12”

Galactic Longitude 78.85°

Galactic Latitude 4.13°

Constellation Cygnus

The simplified sky map below shows the position of HR7737 in the sky:

Simplified finder chart for HR7737.

Visibility of HR7737 from your location

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

HR7737 is circumpolar and transits at 03:05 UTC (altitude: 80.6°)

Digitized Sky Survey image of HR7737

The image below is a photograph of HR7737 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 HR7737 is 0.005 arcsec per year in Right Ascension and -0.021 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7737. The red arrow shows the motion of HR7737 during the next 10000 years (0.83 arcmin in Right Ascension and -3.50 arcmin in declination);

Distance of HR7737 from the Sun and relative movement

HR7737 is distant 1,181.16 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

Distance (parsec) 362.32 pc

Distance (light year) 1,181.16 ly

Heliocentric radial velocity -18 km/s

Proper Motion RA 0.005 arcsec/year

Proper Motion Dec -0.021 arcsec/year

Spectral properties of HR7737

HR7737 belongs to spectral class B9 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -1.09

Spectral Type B9IV

Color Index (B-V) -0.04

Temperature of HR7737 10653K

The red dot in the diagram below shows where HR7737 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7737. Attribution: Richard Powell / CC BY-SA

HR7737 star system properties

HR7737 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR7737 double sysyem:

Main star magnitude 6.71

Secondary star magnitude 6.91

Magnitude difference 0.2

Separation 0.9 arcsec

Alternative designations of HR7737

Henry Draper Catalogue HD192659

SAO Catalogue SAO49345

Hipparcos Catalogue HIP99749

Durchmusterung Catalogue BD+41 3668

Aitken Double Star Catalogue ADS13572

In Evidence

Other stars in Cygnus