HR4803

Below the horizon. Rise: 9:07 | Tran: 12:24 | Set: 15:42

Alt: -5.89° Az: 232.40° Direction: South-West

HR4803 is a double sub-giant star of spectral class F1 in the constellation of Hydra.

HR4803 visual magnitude is 5.45. Because of its faintness, HR4803 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 HR4803. The red arrow shows the motion of HR4803 during the next 1000 years (1.27 arcmin in Right Ascension and -1.52 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 39m 01s

Declination -27° 16’ 29”

Hour Angle 04h 09m 51s

Sideral Time 16h 48m 52s

J2000

Right Ascension 12h 37m 42s

Declination -27° 08’ 20”

Galactic Coordinates

Galactic Longitude 299.17°

Galactic Latitude 35.63°

Finder Chart

Simplified finder chart for HR4803.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.45

Class Sub-giant

Absolute magnitude 2.76

Spectral Type F1IV

Color Index (B-V) 0.32

Temperature 7337K

The red dot in the diagram below shows where HR4803 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4803. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4803 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR4803 double sysyem:

Main star magnitude 5.45

Secondary star magnitude 11.35

Magnitude difference 5.9

Separation 1.4 arcsec

Distance, Radial Speed, Proper Motion

HR4803 is distant 112.76 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

Distance (parsec) 34.59

Distance (light year) 112.76

Radial Speed -1 km/s

Proper Motion RA 0.076 arcsec/y

Proper Motion Dec -0.091"/y

Alternative Designations

Henry Draper Catalogue HD109799

SAO Catalogue SAO180965

Hipparcos Catalogue HIP61621

Durchmusterung Catalogue CD-26 9233

Aitken Double Star Catalogue ADS8612

Visibility from Your Location

Today's HR4803 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 117.3° RISE 9:07

Max altitude: 11.2° TRANSIT 12:24

Azimuth: 242.7° SET 15:42

Set Location

Other stars in Hydra