(163899) 2003 SD220
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Brightest16 Dec 201813.10.979 AU0.029 AU11.14 LD4,282,959 km14h39m+45°09'79.1°99.3°
Approach22 Dec 201816.20.968 AU0.019 AU7.37 LD2,834,313 km17h05m+08°29'34.6°144.8°
Today23 Jul 201919.80.976 AU1.474 AU573.43 LD220,465,584 km05h08m+27°44'41.2°43.3°

Based on its absolute magnitude (Hₒ) of 17.3 and an albedo between 0.25 and 0.05, the estimated diameter of (163899) 2003 SD220 is 920 - 2060 m.

(163899) 2003 SD220- 2019-07-23

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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 lightcurve 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 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.