2021 SO
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Approach22 Sep 202119.71.037 AU0.039 AU15.14 LD5,821,277 km22h42m+25°57'148.2°30.7°
Brightest22 Sep 202119.71.037 AU0.039 AU15.15 LD5,825,068 km22h36m+24°29'148.4°30.5°
Today23 Oct 202123.50.995 AU0.105 AU41.03 LD15,773,615 km19h58m-26°34'86.8°87.1°

Based on its absolute magnitude (Hₒ) of 25.4 and an albedo between 0.25 and 0.05, the estimated diameter of 2021 SO is 25 - 50 m.

2021 SO- 2021-10-23
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.