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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
north SunriseRise: 7:49  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sunny DaytimeWhat's Visible Now?
All Constellations » Hydra » 


Altitude: 5.3°   Azimuth: 187.6°   Direction: South

HR4735 is a main-sequence star in the constellation of Hydra.

HR4735 visual magnitude is 5.55. Because of its reltive faintness, HR4735 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 HR4735:


HR4735 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 5.3°
Azimuth: 187.6°
Direction: South

Celestial coordinates and finder chart of HR4735

HR4735 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 HR4735 are provided in the following table:

12h 26m 51s
-32° 49’ 47”

The simplified sky map below shows the position of HR4735 in the sky:

Finder chart HR4735 star
Simplified finder chart for HR4735.

Visibility of HR4735 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 HR4735 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: 122.8°
Max altitude: 5.7°
Azimuth: 237.2°

Digitized Sky Survey image of HR4735

The image below is a photograph of HR4735 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 HR4735 is -0.005 arcsec per year in Right Ascension and -0.027 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4735 star
DSS2 image of HR4735. The red arrow shows the motion of HR4735 during the next 10000 years (-0.83 arcmin in Right Ascension and -4.50 arcmin in declination);

Distance of HR4735 from the Sun and relative movement

HR4735 is distant 510.97 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

156.74 pc
510.97 ly
-15 km/s
-0.005 arcsec/year
-0.027 arcsec/year

Spectral properties of HR4735

HR4735 belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR4735 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4735. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4735