Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:44  
clear_day Transit: 12:57  
SunsetSet: 21:11 south
sunny DaytimeWhat's Visible Now
All Constellations » Hydra » 


Altitude: -66.9°   Azimuth: 348.8°   Direction: North

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 skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR4320:


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

Altitude: -66.9°
Azimuth: 348.8°
Direction: North

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°
HR4320 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4320

The image below is a photograph of HR4320 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). 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);

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