2021 TN9
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Brightest10 Oct 202120.41.025 AU0.029 AU11.32 LD4,352,005 km02h29m+16°35'156.9°22.5°
Approach12 Oct 202120.71.018 AU0.027 AU10.38 LD3,989,295 km03h09m+38°20'139.5°39.5°
Today22 Oct 202123.60.996 AU0.052 AU20.16 LD7,751,208 km09h58m+68°26'88.8°88.2°

Based on its absolute magnitude (Hₒ) of 27.0 and an albedo between 0.25 and 0.05, the estimated diameter of 2021 TN9 is 10 - 25 m.

2021 TN9- 2021-10-22

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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.