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: 4:48  
clear_day Transit: 12:56  
SunsetSet: 21:05 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Hydra » 


HR4071 is a star in the constellation of Hydra.

HR4071 visual magnitude is 6.5. Because of its reltive faintness, HR4071 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 HR4071:

HR4071 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR4071

HR4071 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 HR4071 are provided in the following table:

10h 21m 28s
-23° 42’ 38”

The simplified sky map below shows the position of HR4071 in the sky:

Finder chart HR4071 star
Simplified finder chart for HR4071.

Visibility of HR4071 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 HR4071 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: 113.7°
Max altitude: 14.8°
Azimuth: 246.3°
HR4071 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4071

The image below is a photograph of HR4071 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 HR4071 is -0.049 arcsec per year in Right Ascension and 0.019 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4071 star
DSS2 image of HR4071. The red arrow shows the motion of HR4071 during the next 10000 years (-8.17 arcmin in Right Ascension and 3.17 arcmin in declination);

Distance of HR4071 from the Sun and relative movement

HR4071 is distant 373.42 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

114.55 pc
373.42 ly
13 km/s
-0.049 arcsec/year
0.019 arcsec/year

Spectral properties of HR4071

HR4071 belongs to spectral class A3


The red dot in the diagram below shows where HR4071 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4071. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4071