HR4158

Below the horizon. Rise: 15:16 | Tran: 20:10 | Set: 1:09

Alt: -49.74° Az: 342.05° Direction: North-North-West

HR4158 is a double main-sequence star of spectral class F7 in the constellation of Hydra.

HR4158 visual magnitude is 5.7. Because of its faintness, HR4158 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 HR4158. The red arrow shows the motion of HR4158 during the next 1000 years (4.47 arcmin in Right Ascension and -11.22 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 37m 47s

Declination -12° 21’ 44”

Hour Angle 11h 12m 56s

Sidereal Time 21h 50m 44s

J2000

Right Ascension 10h 36m 32s

Declination -12° 13’ 49”

Galactic Coordinates

Galactic Longitude 258.78°

Galactic Latitude 38.82°

Finder Chart

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Finder chart for HR4158.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.7

Class Main-sequence

Absolute magnitude 3.75

Spectral Type F7V

Color Index (B-V) 0.52

Temperature 6300K

The red dot in the diagram below shows where HR4158 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4158. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4158 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 HR4158 double sysyem:

Main star magnitude 5.7

Secondary star magnitude 10.8

Magnitude difference 5.1

Separation 14.4 arcsec

Distance, Radial Speed, Proper Motion

HR4158 is distant 80.16 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 24.59

Distance (light year) 80.16

Radial Speed -6 km/s

Proper Motion RA 0.268 arcsec/y

Proper Motion Dec -0.673"/y

Alternative Designations

Henry Draper Catalogue HD91889

SAO Catalogue SAO156095

Hipparcos Catalogue HIP51933

Durchmusterung Catalogue BD-11 2918

Gliese Catalogue Gl 398.1

FK5 Catalogue 1274

Visibility from Your Location

Today's HR4158 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 102.4° RISE 15:16

Max altitude: 26.2° TRANSIT 20:10

Azimuth: 257.6° SET 1:09

Set Location

Other stars in Hydra