2016 GW221
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Approach10 Apr 201918.41.023 AU0.027 AU10.40 LD3,999,220 km15h13m+17°16'141.3°37.8°
Brightest13 Apr 201918.21.028 AU0.028 AU10.94 LD4,207,755 km13h59m+15°38'154.0°25.3°
Today23 Jul 201927.50.845 AU0.221 AU85.95 LD33,044,969 km09h56m-02°18'35.0°136.4°

Based on its absolute magnitude (Hₒ) of 24.7 and an albedo between 0.25 and 0.05, the estimated diameter of 2016 GW221 is 30 - 70 m.

2016 GW221- 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.