HR4628

Below the horizon. Rise: 17:30 | Tran: 19:26 | Set: 21:21

Alt: -9.86° Az: 135.46° Direction: South-East

HR4628 is a double hypergiant star of spectral class A0 in the constellation of Hydra.

HR4628 visual magnitude is 6.17. Because of its faintness, HR4628 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 HR4628. The red arrow shows the motion of HR4628 during the next 10000 years (-8.67 arcmin in Right Ascension and -3.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 11m 21s

Declination -34° 50’ 47”

Hour Angle 20h 10m 36s

Sidereal Time 08h 21m 57s

J2000

Right Ascension 12h 10m 02s

Declination -34° 42’ 17”

Galactic Coordinates

Galactic Longitude 293.36°

Galactic Latitude 27.4°

Finder Chart

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Finder chart for HR4628.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.17

Class Hypergiant

Absolute magnitude 1.15

Spectral Type A0V

Color Index (B-V) 0.03

Temperature 9766K

The red dot in the diagram below shows where HR4628 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4628. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4628 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 HR4628 double sysyem:

Main star magnitude 6.17

Secondary star magnitude 7.97

Magnitude difference 1.8

Separation 3.4 arcsec

Distance, Radial Speed, Proper Motion

HR4628 is distant 328.63 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

Distance (parsec) 100.81

Distance (light year) 328.63

Radial Speed -10 km/s

Proper Motion RA -0.052 arcsec/y

Proper Motion Dec -0.018"/y

Alternative Designations

Henry Draper Catalogue HD105686

SAO Catalogue SAO203183

Hipparcos Catalogue HIP59307

Durchmusterung Catalogue CD-34 7956

Visibility from Your Location

Today's HR4628 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 124.8° RISE 17:30

Max altitude: 3.7° TRANSIT 19:26

Azimuth: 235.2° SET 21:21

Set Location

Other stars in Hydra