HR4340

HR4340 is a variable main-sequence star in the constellation of Ursa Major.

HR4340 visual magnitude is 6.4. Because of its reltive faintness, HR4340 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 HR4340:

Color of HR4340 ⬤

Magnitude of HR4340 6.4

Class Main-sequence

VISIBILITY RIGHT NOW HR4340 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 47°.

Celestial coordinates and finder chart of HR4340

HR4340 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 HR4340 are provided in the following table:

Right Ascension J2000 11h 12m 11s

Declination J2000 +68° 16’ 18”

Galactic Longitude 135.92°

Galactic Latitude 46.27°

Constellation Ursa Major

The simplified sky map below shows the position of HR4340 in the sky:

Simplified finder chart for HR4340.

Visibility of HR4340 from your location

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

HR4340 is circumpolar and transits at 23:15 UTC (altitude: 73.2°)

Digitized Sky Survey image of HR4340

The image below is a photograph of HR4340 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 HR4340 is 0.032 arcsec per year in Right Ascension and 0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4340. The red arrow shows the motion of HR4340 during the next 10000 years (5.33 arcmin in Right Ascension and 1.67 arcmin in declination);

Distance of HR4340 from the Sun and relative movement

HR4340 is distant 299.91 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

Distance (parsec) 92.00 pc

Distance (light year) 299.91 ly

Heliocentric radial velocity -18 km/s

Proper Motion RA 0.032 arcsec/year

Proper Motion Dec 0.01 arcsec/year

Spectral properties of HR4340

HR4340 belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 1.58

Spectral Type A3V

Color Index (B-V)

Temperature of HR4340 10125K

The red dot in the diagram below shows where HR4340 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4340. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4340

Henry Draper Catalogue HD97138

SAO Catalogue SAO15431

Hipparcos Catalogue HIP54721

Durchmusterung Catalogue BD+69 602

General Catalogue of Variable Stars 5119

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In Evidence

Other stars in Ursa Major