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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: 6:38  
clear_day Transit: 12:10  
SunsetSet: 17:43
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Hydra » 


Altitude: -11.8°   Azimuth: 121.8°   Direction: East-South-East

HR4320 is a main-sequence star in the constellation of Hydra.

HR4320 visual magnitude is 6.77. Because of its reltive faintness, HR4320 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR4320 is -0.057 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 HR4320 star
DSS2 image of HR4320. The red arrow shows the motion of HR4320 during the next 10000 years (-9.50 arcmin in Right Ascension and -5.33 arcmin in declination);

Key facts about HR4320


HR4320 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -11.8°
Azimuth: 121.8°
Direction: East-South-East

Celestial coordinates and finder chart of HR4320

HR4320 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4320 are provided in the following table:

11h 06m 38s
-28° 43’ 40”

The simplified sky map below shows the position of HR4320 in the sky:

Finder chart HR4320 star
Simplified finder chart for HR4320.

Visibility of HR4320 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 HR4320 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: 118.7°
Max altitude: 9.8°
Azimuth: 241.3°

Distance of HR4320 from the Sun and relative movement

HR4320 is distant 644.27 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

197.63 pc
644.27 ly
18 km/s
-0.057 arcsec/year
-0.032 arcsec/year

Spectral properties of HR4320

HR4320 belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR4320 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4320. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4320