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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Hydra » 


Altitude: -9.8°   Azimuth: 99.3°   Direction: East

HR4163 is a variable bright giant star in the constellation of Hydra.

HR4163 visual magnitude is 4.82. Because of its moderate brightness, HR4163 should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of HR4163 is 0.034 arcsec per year in Right Ascension and -0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4163 star
DSS2 image of HR4163. The red arrow shows the motion of HR4163 during the next 10000 years (5.67 arcmin in Right Ascension and -5.33 arcmin in declination);

Key facts about HR4163

Bright giant

HR4163 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -9.8°
Azimuth: 99.3°
Direction: East

Celestial coordinates and finder chart of HR4163

HR4163 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4163 are provided in the following table:

10h 37m 33s
-13° 23’ 03”

The simplified sky map below shows the position of HR4163 in the sky:

Finder chart HR4163 star
Simplified finder chart for HR4163.

Visibility of HR4163 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR4163 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 103.4°
Max altitude: 25.1°
Azimuth: 256.6°

Distance of HR4163 from the Sun and relative movement

HR4163 is distant 527.51 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

161.81 pc
527.51 ly
-25 km/s
0.034 arcsec/year
-0.032 arcsec/year

Spectral properties of HR4163

HR4163 belongs to spectral class C5 and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where HR4163 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4163. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4163