2011 QJ21
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Approach18 Aug 202319.61.038 AU0.042 AU16.23 LD6,239,157 km23h48m+32°31'126.4°51.7°
Brightest22 Aug 202319.11.060 AU0.051 AU19.77 LD7,602,642 km23h07m-00°52'160.5°18.6°
Today4 Dec 202327.11.454 AU1.061 AU412.89 LD158,740,713 km23h30m-28°00'90.4°42.7°

Based on its absolute magnitude (Hₒ) of 24.5 and an albedo between 0.25 and 0.05, the estimated diameter of 2011 QJ21 is 35 - 75 m.

2011 QJ21- 2023-12-04
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.