2011 QJ21
ephemeris	date	magn	radius	delta (AU)	delta (LD)	delta (km)	ra	dec	elong	phase
Approach	18 Aug 2023	19.6	1.038 AU	0.042 AU	16.23 LD	6,239,157 km	23h48m	+32°31'	126.4°	51.7°
Brightest	22 Aug 2023	19.1	1.060 AU	0.051 AU	19.77 LD	7,602,642 km	23h07m	-00°52'	160.5°	18.6°
Today	4 Dec 2023	27.1	1.454 AU	1.061 AU	412.89 LD	158,740,713 km	23h30m	-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.

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.