2017 SJ20
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Brightest21 Oct 202117.81.037 AU0.057 AU22.17 LD8,525,405 km04h10m-14°58'135.6°42.2°
Today23 Oct 202117.91.026 AU0.052 AU20.25 LD7,787,179 km04h50m-19°45'125.7°51.9°
Approach25 Oct 202118.31.009 AU0.049 AU18.96 LD7,290,654 km06h14m-27°10'106.4°71.0°

Based on its absolute magnitude (Hₒ) of 22.4 and an albedo between 0.25 and 0.05, the estimated diameter of 2017 SJ20 is 90 - 200 m.

2017 SJ20- 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.