HR7734

HR7734 is a variable hypergiant star in the constellation of Cygnus.

HR7734 visual magnitude is 6.45. Because of its reltive faintness, HR7734 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 HR7734:

Color of HR7734 ⬤

Magnitude of HR7734 6.45

Class Hypergiant

VISIBILITY RIGHT NOW HR7734 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 35°.

Celestial coordinates and finder chart of HR7734

HR7734 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 HR7734 are provided in the following table:

Right Ascension J2000 20h 14m 04s

Declination J2000 +36° 36’ 19”

Galactic Longitude 74.23°

Galactic Latitude 1.14°

Constellation Cygnus

The simplified sky map below shows the position of HR7734 in the sky:

Simplified finder chart for HR7734.

Visibility of HR7734 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 HR7734 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: 53.4° RISE 17:52

Max altitude: 75.1° TRANSIT 4:28

Azimuth: 306.6° SET 15:01

RIGHT NOW HR7734 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7734

The image below is a photograph of HR7734 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 HR7734 is 0.024 arcsec per year in Right Ascension and 0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7734. The red arrow shows the motion of HR7734 during the next 10000 years (4.00 arcmin in Right Ascension and 0.33 arcmin in declination);

Distance of HR7734 from the Sun and relative movement

HR7734 is distant 1,009.29 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

Distance (parsec) 309.60 pc

Distance (light year) 1,009.29 ly

Heliocentric radial velocity -22 km/s

Proper Motion RA 0.024 arcsec/year

Proper Motion Dec 0.002 arcsec/year

Spectral properties of HR7734

HR7734 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude -1.00

Spectral Type A0V

Color Index (B-V) 0

Temperature of HR7734 10125K

The red dot in the diagram below shows where HR7734 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7734. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7734

Henry Draper Catalogue HD192538

SAO Catalogue SAO69653

Hipparcos Catalogue HIP99719

Durchmusterung Catalogue BD+36 3949

General Catalogue of Variable Stars Var?

In Evidence

Other stars in Cygnus