HR4421

HR4421 is a main-sequence star in the constellation of Ursa Major.

HR4421 visual magnitude is 5.83. Because of its reltive faintness, HR4421 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 HR4421:

Color of HR4421 ⬤

Magnitude of HR4421 5.83

Class Main-sequence

VISIBILITY RIGHT NOW HR4421 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 25°.

Celestial coordinates and finder chart of HR4421

HR4421 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 HR4421 are provided in the following table:

Right Ascension J2000 11h 29m 04s

Declination J2000 +61° 46’ 41”

Galactic Longitude 138.87°

Galactic Latitude 52.73°

Constellation Ursa Major

The simplified sky map below shows the position of HR4421 in the sky:

Simplified finder chart for HR4421.

Visibility of HR4421 from your location

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

HR4421 is circumpolar and transits at 23:28 UTC (altitude: 79.7°)

Digitized Sky Survey image of HR4421

The image below is a photograph of HR4421 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 HR4421 is -0.112 arcsec per year in Right Ascension and 0.237 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR4421. The red arrow shows the motion of HR4421 during the next 1000 years (-1.87 arcmin in Right Ascension and 3.95 arcmin in declination);

Distance of HR4421 from the Sun and relative movement

HR4421 is distant 107.24 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 32.89 pc

Distance (light year) 107.24 ly

Heliocentric radial velocity -8 km/s

Proper Motion RA -0.112 arcsec/year

Proper Motion Dec 0.237 arcsec/year

Spectral properties of HR4421

HR4421 belongs to spectral class F5 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 3.24

Spectral Type F5V

Color Index (B-V) 0.36

Temperature of HR4421 7101K

The red dot in the diagram below shows where HR4421 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4421. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4421

Henry Draper Catalogue HD99747

SAO Catalogue SAO15520

Hipparcos Catalogue HIP56035

Durchmusterung Catalogue BD+62 1183

FK5 Catalogue 2915

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In Evidence

Other stars in Ursa Major