2003 WP21
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Today20 Sep 202024.61.816 AU1.118 AU434.89 LD167,202,279 km03h50m+19°08'117.6°29.3°
Brightest23 Nov 202016.71.010 AU0.038 AU14.82 LD5,699,321 km03h40m+74°42'125.7°52.5°
Approach25 Nov 202017.30.989 AU0.032 AU12.29 LD4,726,216 km17h10m+70°39'92.2°86.0°

Based on its absolute magnitude (Hₒ) of 21.8 and an albedo between 0.25 and 0.05, the estimated diameter of 2003 WP21 is 115 - 260 m.

2003 WP21- 2020-09-20
astro.vanbuitenen.nl


 
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The interactive orbit chart above shows the near-earth object's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below.

(Left-click and drag to rotate the view; right-click and drag to move the view; use scroll wheel to zoom in our out.)

The light curve chart below shows the estimated development of the NEO's magnitude during its approach to earth.


The following all-sky chart shows the path of the NEO in the coming months.





The following chart shows the path of the NEO in the coming days or hours. The field of view is optimized for (~10x50) binoculars and finderscopes. A more printer-friendly version of the same chart can be found below.