HR4072

Above the horizon. Circumpolar today

Alt: 69.31° Az: 1.70° Direction: North

HR4072 is a variable hypergiant star of spectral class A0 in the constellation of Ursa Major.

HR4072 visual magnitude is 4.97. Because of its moderate brightness, HR4072 is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of HR4072. The red arrow shows the motion of HR4072 during the next 10000 years (-1.33 arcmin in Right Ascension and -3.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 25m 56s

Declination +65° 26’ 10”

Hour Angle 23h 54m 13s

Sidereal Time 10h 20m 09s

J2000

Right Ascension 10h 24m 07s

Declination +65° 33’ 59”

Galactic Coordinates

Galactic Longitude 143.54°

Galactic Latitude 45.22°

Finder Chart

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Finder chart for HR4072.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.97

Class Hypergiant

HR4072 is also a SiSrHg chemically peculiar star.

Absolute magnitude 0.15

Spectral Type A0

Color Index (B-V) -0.06

Temperature 10941K

The red dot in the diagram below shows where HR4072 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4072. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR4072 is distant 300.74 light years from the Sun

Distance (parsec) 92.25

Distance (light year) 300.74

Proper Motion RA -0.008 arcsec/y

Proper Motion Dec -0.022"/y

Alternative Designations

Henry Draper Catalogue HD89822

SAO Catalogue SAO15163

Hipparcos Catalogue HIP50933

Durchmusterung Catalogue BD+66 664

Gliese Catalogue Wo 9327

FK5 Catalogue 387

General Catalogue of Variable Stars 4839

Visibility from Your Location

HR4072 is circumpolar and transits at 14:20 UTC (altitude: 69.3°)

Name:	Bagnolo in Piano, Italy
Latitude:	44° 45' 51.8" N
Longitude:	10° 40' 25.0" E
Timezone:	Europe/Rome

In Evidence

Other stars in Ursa Major

HR4072

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location

Set Location

In Evidence

Other stars in Ursa Major

HR4072

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location