HR4123

Below the horizon. Rise: 6:53 | Tran: 11:40 | Set: 16:27

Alt: -18.25° Az: 89.23° Direction: East

HR4123 is a variable main-sequence star of spectral class B9 in the constellation of Hydra.

HR4123 visual magnitude is 5.58. Because of its faintness, HR4123 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 HR4123. The red arrow shows the motion of HR4123 during the next 10000 years (-7.50 arcmin in Right Ascension and 1.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 32m 12s

Declination -13° 42’ 56”

Hour Angle 17h 11m 14s

Sideral Time 03h 43m 27s

J2000

Right Ascension 10h 30m 59s

Declination -13° 35’ 17”

Galactic Coordinates

Galactic Longitude 258.57°

Galactic Latitude 36.91°

Finder Chart

Simplified finder chart for HR4123.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.58

Class Main-sequence

Absolute magnitude -0.29

Spectral Type B9V

Color Index (B-V) -0.04

Temperature 10653K

The red dot in the diagram below shows where HR4123 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4123. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR4123 is distant 486.57 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

Distance (parsec) 149.25

Distance (light year) 486.57

Radial Speed 13 km/s

Proper Motion RA -0.045 arcsec/y

Proper Motion Dec 0.009"/y

Alternative Designations

Henry Draper Catalogue HD91120

SAO Catalogue SAO156029

Hipparcos Catalogue HIP51491

Durchmusterung Catalogue BD-12 3181

General Catalogue of Variable Stars Var?

Visibility from Your Location

Today's HR4123 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 103.7° RISE 6:53

Max altitude: 24.8° TRANSIT 11:40

Azimuth: 256.3° SET 16:27

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Hydra