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

HR4000

Altitude: 15.3°   Azimuth: 236.3°   Direction: West-South-West

HR4000 is a main-sequence star in the constellation of Sextans.

HR4000 visual magnitude is 6.25. Because of its reltive faintness, HR4000 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 HR4000:

6.25
Main-sequence

HR4000 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 15.3°
Azimuth: 236.3°
Direction: West-South-West

Celestial coordinates and finder chart of HR4000

HR4000 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 HR4000 are provided in the following table:

10h 11m 17s
-07° 19’ 00”
248.7°
38.16°
Sextans

The simplified sky map below shows the position of HR4000 in the sky:

Finder chart HR4000 star
Simplified finder chart for HR4000.

Visibility of HR4000 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 HR4000 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: 97.3°
Max altitude: 31.2°
Azimuth: 262.7°

Digitized Sky Survey image of HR4000

The image below is a photograph of HR4000 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 HR4000 is 0.012 arcsec per year in Right Ascension and -0.014 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4000 star
DSS2 image of HR4000. The red arrow shows the motion of HR4000 during the next 10000 years (2.00 arcmin in Right Ascension and -2.33 arcmin in declination);

Distance of HR4000 from the Sun and relative movement

HR4000 is distant 483.68 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

148.37 pc
483.68 ly
13 km/s
0.012 arcsec/year
-0.014 arcsec/year

Spectral properties of HR4000

HR4000 belongs to spectral class A2 and has a luminosity class of V corresponding to a main-sequence star.

0.39
A2V
10002K

The red dot in the diagram below shows where HR4000 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4000. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4000

SAO137400
SAO137400