HR7742

HR7742 is a giant star in the constellation of Cepheus.

HR7742 visual magnitude is 5.79. Because of its reltive faintness, HR7742 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 HR7742:

Color of HR7742 ⬤

Magnitude of HR7742 5.79

Class Giant

VISIBILITY RIGHT NOW HR7742 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 66°.

Celestial coordinates and finder chart of HR7742

HR7742 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR7742 are provided in the following table:

Right Ascension J2000 20h 13m 27s

Declination J2000 +60° 38’ 26”

Galactic Longitude 94.66°

Galactic Latitude 14.16°

Constellation Cepheus

The simplified sky map below shows the position of HR7742 in the sky:

Simplified finder chart for HR7742.

Visibility of HR7742 from your location

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

HR7742 is circumpolar and transits at 08:11 UTC (altitude: 80.8°)

Digitized Sky Survey image of HR7742

The image below is a photograph of HR7742 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 HR7742 is 0.044 arcsec per year in Right Ascension and 0.058 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7742. The red arrow shows the motion of HR7742 during the next 10000 years (7.33 arcmin in Right Ascension and 9.67 arcmin in declination);

Distance of HR7742 from the Sun and relative movement

HR7742 is distant 593.81 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

Distance (parsec) 182.15 pc

Distance (light year) 593.81 ly

Heliocentric radial velocity -1 km/s

Proper Motion RA 0.044 arcsec/year

Proper Motion Dec 0.058 arcsec/year

Spectral properties of HR7742

HR7742 belongs to spectral class K5

Absolute magnitude -0.51

Spectral Type K5

Color Index (B-V) 1.47

Temperature of HR7742 3839K

The red dot in the diagram below shows where HR7742 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7742. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7742

Henry Draper Catalogue HD192781

SAO Catalogue SAO18766

Hipparcos Catalogue HIP99663

Durchmusterung Catalogue BD+60 2099

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In Evidence

Other stars in Cepheus