HR4220

Below the horizon. Never rises today

Alt: -65.94° Az: 137.56° Direction: South-East

HR4220 is a double sub-giant star of spectral class B7 in the constellation of Carina.

HR4220 visual magnitude is 5.23. Because of its faintness, HR4220 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR4220. The red arrow shows the motion of HR4220 during the next 10000 years (-1.33 arcmin in Right Ascension and 2.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 47m 25s

Declination -64° 23’ 45”

Hour Angle 14h 38m 07s

Sidereal Time 01h 25m 32s

J2000

Right Ascension 10h 46m 29s

Declination -64° 15’ 47”

Galactic Coordinates

Galactic Longitude 289.88°

Galactic Latitude -4.61°

Finder Chart

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Finder chart for HR4220.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.23

Class Sub-giant

Absolute magnitude -0.37

Spectral Type B7IV

Color Index (B-V) -0.07

Temperature 11092K

The red dot in the diagram below shows where HR4220 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4220. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4220 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR4220 double sysyem:

Main star magnitude 5.23

Secondary star magnitude 5.33

Magnitude difference 0.1

Separation 0.1 arcsec

Distance, Radial Speed, Proper Motion

HR4220 is distant 428.95 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

Distance (parsec) 131.58

Distance (light year) 428.95

Radial Speed 12 km/s

Proper Motion RA -0.008 arcsec/y

Proper Motion Dec 0.012"/y

Alternative Designations

Henry Draper Catalogue HD93549

SAO Catalogue SAO251117

Hipparcos Catalogue HIP52701

Durchmusterung Catalogue CP-63 1649

Visibility from Your Location

HR4220 is currently not visible from Greenwich, UK

Set Location

Other stars in Carina