HR4251

Below the horizon. Rise: 15:16 | Tran: 19:24 | Set: 23:32

Alt: -0.74° Az: 122.70° Direction: East-South-East

HR4251 is a variable and multiple main-sequence star of spectral class F6 in the constellation of Hydra.

HR4251 visual magnitude is 5.24. Because of its faintness, HR4251 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 HR4251. The red arrow shows the motion of HR4251 during the next 1000 years (1.30 arcmin in Right Ascension and -3.98 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 54m 44s

Declination -20° 16’ 28”

Hour Angle 19h 44m 54s

Sidereal Time 06h 39m 38s

J2000

Right Ascension 10h 53m 29s

Declination -20° 08’ 20”

Galactic Coordinates

Galactic Longitude 268.69°

Galactic Latitude 34.78°

Finder Chart

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Finder chart for HR4251.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.24

Class Main-sequence

Absolute magnitude 2.76

Spectral Type F6V

Color Index (B-V) 0.47

Temperature 6528K

The red dot in the diagram below shows where HR4251 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4251. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4251 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 HR4251 double sysyem:

Main star magnitude 5.24

Secondary star magnitude 9.24

Magnitude difference 4

Separation 124.5 arcsec

Distance, Radial Speed, Proper Motion

HR4251 is distant 102.16 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

Distance (parsec) 31.34

Distance (light year) 102.16

Radial Speed -5 km/s

Proper Motion RA 0.078 arcsec/y

Proper Motion Dec -0.239"/y

Alternative Designations

Henry Draper Catalogue HD94388

SAO Catalogue SAO156301

Hipparcos Catalogue HIP53252

Durchmusterung Catalogue BD-19 3125

Gliese Catalogue Gl 403.1

General Catalogue of Variable Stars 5006

Visibility from Your Location

Today's HR4251 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 110.3° RISE 15:16

Max altitude: 18.2° TRANSIT 19:24

Azimuth: 249.7° SET 23:32

Set Location

Other stars in Hydra