HR3221

Altitude: 21.9° Azimuth: 359.6° Direction: North

HR3221 is a multiple main-sequence star in the constellation of Ursa Major.

HR3221 visual magnitude is 6.45. Because of its reltive faintness, HR3221 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 HR3221:

Color of HR3221 ⬤

Magnitude of HR3221 6.45

Class Main-sequence

VISIBILITY RIGHT NOW

HR3221 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 21.9°
Azimuth: 359.6°
Direction: North

Celestial coordinates and finder chart of HR3221

HR3221 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 HR3221 are provided in the following table:

Right Ascension J2000 08h 15m 50s

Declination J2000 +60° 22’ 50”

Galactic Longitude 156.59°

Galactic Latitude 33.69°

Constellation Ursa Major

The simplified sky map below shows the position of HR3221 in the sky:

Simplified finder chart for HR3221.

Visibility of HR3221 from your location

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

HR3221 is circumpolar and transits at 03:17 UTC (altitude: 81.1°)

Digitized Sky Survey image of HR3221

The image below is a photograph of HR3221 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 HR3221 is -0.013 arcsec per year in Right Ascension and 0.007 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR3221. The red arrow shows the motion of HR3221 during the next 10000 years (-2.17 arcmin in Right Ascension and 1.17 arcmin in declination);

Distance of HR3221 from the Sun and relative movement

HR3221 is distant 499.23 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

Distance (parsec) 153.14 pc

Distance (light year) 499.23 ly

Heliocentric radial velocity -16 km/s

Proper Motion RA -0.013 arcsec/year

Proper Motion Dec 0.007 arcsec/year

Spectral properties of HR3221

HR3221 belongs to spectral class A7 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 0.52

Spectral Type A7V

Color Index (B-V) 0.2

Temperature of HR3221 8163K

The red dot in the diagram below shows where HR3221 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3221. Attribution: Richard Powell / CC BY-SA

HR3221 star system properties

HR3221 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR3221 double sysyem:

Main star magnitude 6.45

Secondary star magnitude 10.55

Magnitude difference 4.1

Separation 48.6 arcsec

Alternative designations of HR3221

Henry Draper Catalogue HD68457

SAO Catalogue SAO14479

Hipparcos Catalogue HIP40474

Durchmusterung Catalogue BD+60 1119

Aitken Double Star Catalogue ADS6680

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In Evidence

Other stars in Ursa Major