HR4243

HR4243 is a multiple sub-giant star in the constellation of Ursa Major.

HR4243 visual magnitude is 5.93. Because of its reltive faintness, HR4243 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 HR4243:

Color of HR4243 ⬤

Magnitude of HR4243 5.93

Class Sub-giant

VISIBILITY RIGHT NOW HR4243 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 34°.

Celestial coordinates and finder chart of HR4243

HR4243 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 HR4243 are provided in the following table:

Right Ascension J2000 10h 53m 30s

Declination J2000 +69° 51’ 14”

Galactic Longitude 136.56°

Galactic Latitude 44.02°

Constellation Ursa Major

The simplified sky map below shows the position of HR4243 in the sky:

Simplified finder chart for HR4243.

Visibility of HR4243 from your location

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

HR4243 is circumpolar and transits at 22:52 UTC (altitude: 71.6°)

Digitized Sky Survey image of HR4243

The image below is a photograph of HR4243 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 HR4243 is -0.398 arcsec per year in Right Ascension and -0.067 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR4243. The red arrow shows the motion of HR4243 during the next 1000 years (-6.63 arcmin in Right Ascension and -1.12 arcmin in declination);

Distance of HR4243 from the Sun and relative movement

HR4243 is distant 141.62 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

Distance (parsec) 43.44 pc

Distance (light year) 141.62 ly

Heliocentric radial velocity 15 km/s

Proper Motion RA -0.398 arcsec/year

Proper Motion Dec -0.067 arcsec/year

Spectral properties of HR4243

HR4243 belongs to spectral class G9 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 2.74

Spectral Type G9IV

Color Index (B-V) 0.99

Temperature of HR4243 4767K

The red dot in the diagram below shows where HR4243 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4243. Attribution: Richard Powell / CC BY-SA

HR4243 star system properties

HR4243 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR4243 double sysyem:

Main star magnitude 5.93

Secondary star magnitude 8.93

Magnitude difference 3

Separation 75.1 arcsec

Alternative designations of HR4243

Henry Draper Catalogue HD94132

SAO Catalogue SAO7229

Hipparcos Catalogue HIP53257

Durchmusterung Catalogue BD+70 634

FK5 Catalogue 2866

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In Evidence

Other stars in Ursa Major