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: 4:52  
clear_day Transit: 12:55  
SunsetSet: 20:59 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Hydra » 


HR4307 is a giant star in the constellation of Hydra.

HR4307 visual magnitude is 6.46. Because of its reltive faintness, HR4307 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 HR4307:

HR4307 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR4307

HR4307 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 HR4307 are provided in the following table:

11h 03m 16s
-31° 57’ 38”

The simplified sky map below shows the position of HR4307 in the sky:

Finder chart HR4307 star
Simplified finder chart for HR4307.

Visibility of HR4307 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 HR4307 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: 122.0°
Max altitude: 6.6°
Azimuth: 238.0°
HR4307 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4307

The image below is a photograph of HR4307 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 HR4307 is -0.039 arcsec per year in Right Ascension and -0.031 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4307 star
DSS2 image of HR4307. The red arrow shows the motion of HR4307 during the next 10000 years (-6.50 arcmin in Right Ascension and -5.17 arcmin in declination);

Distance of HR4307 from the Sun and relative movement

HR4307 is distant 752.89 light years from the Sun and it is moving far from the Sun at the speed of 80 kilometers per second.

230.95 pc
752.89 ly
80 km/s
-0.039 arcsec/year
-0.031 arcsec/year

Spectral properties of HR4307

HR4307 belongs to spectral class M1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4307 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4307. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4307