Your guide to the Solar System and the night sky
Please donate now to help keep TheSkyLive ads-free. This site cannot run without your voluntary donations.
🌎  Greenwich, United Kingdom [change]

HR4003

HR4003 is a double main-sequence star in the constellation of Antlia.

HR4003 visual magnitude is 6.28. Because of its reltive faintness, HR4003 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 HR4003:

6.28
Main-sequence
HR4003 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 10°.

Celestial coordinates and finder chart of HR4003

HR4003 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4003 are provided in the following table:

10h 12m 02s
-28° 36’ 23”
265.45°
22.43°
Antlia

The simplified sky map below shows the position of HR4003 in the sky:

Finder chart HR4003 star
Simplified finder chart for HR4003.

Visibility of HR4003 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR4003 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 118.6°
Max altitude: 9.9°
Azimuth: 241.4°
HR4003 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4003

The image below is a photograph of HR4003 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 HR4003 is -0.026 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 HR4003 star
DSS2 image of HR4003. The red arrow shows the motion of HR4003 during the next 10000 years (-4.33 arcmin in Right Ascension and -2.33 arcmin in declination);

Distance of HR4003 from the Sun and relative movement

HR4003 is distant 509.38 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

156.25 pc
509.38 ly
18 km/s
-0.026 arcsec/year
-0.014 arcsec/year

Spectral properties of HR4003

HR4003 belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star.

0.31
A1V
10002K

The red dot in the diagram below shows where HR4003 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4003. Attribution: Richard Powell / CC BY-SA

HR4003 star system properties

HR4003 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR4003 double sysyem:

6.28
6.38
0.1
0.1 arcsec

Alternative designations of HR4003

SAO178526
SAO178526