HR4073

Below the horizon. Rise: 6:00 | Tran: 9:53 | Set: 13:45

Alt: -11.86° Az: 248.40° Direction: West-South-West

HR4073 is a double hypergiant star of spectral class A0 in the constellation of Hydra.

HR4073 visual magnitude is 6.51. Because of its faintness, HR4073 is not visible to the naked eye.

DSS2 image of HR4073. The red arrow shows the motion of HR4073 during the next 10000 years (-5.00 arcmin in Right Ascension and 1.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 22m 46s

Declination -22° 39’ 14”

Hour Angle 05h 21m 35s

Sidereal Time 15h 44m 21s

J2000

Right Ascension 10h 21m 35s

Declination -22° 31’ 41”

Galactic Coordinates

Galactic Longitude 263.18°

Galactic Latitude 28.54°

Finder Chart

Simplified finder chart for HR4073.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.51

Class Hypergiant

Absolute magnitude 0.93

Spectral Type A0

Color Index (B-V) 0.07

Temperature 9328K

The red dot in the diagram below shows where HR4073 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4073. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4073 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR4073 double sysyem:

Main star magnitude 6.51

Secondary star magnitude 8.01

Magnitude difference 1.5

Separation 1.8 arcsec

Distance, Radial Speed, Proper Motion

HR4073 is distant 425.59 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

Distance (parsec) 130.55

Distance (light year) 425.59

Radial Speed 12 km/s

Proper Motion RA -0.03 arcsec/y

Proper Motion Dec 0.006"/y

Alternative Designations

Henry Draper Catalogue HD89828

SAO Catalogue SAO178723

Hipparcos Catalogue HIP50739

Durchmusterung Catalogue BD-21 3045

Aitken Double Star Catalogue ADS7739

Visibility from Your Location

Today's HR4073 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 112.7° RISE 6:00

Max altitude: 15.9° TRANSIT 9:53

Azimuth: 247.3° SET 13:45

Set Location

Other stars in Hydra