2017 TJ4
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Today23 Feb 202030.90.544 AU0.477 AU185.66 LD71,379,972 km21h26m-17°55'15.4°151.2°
Approach3 Oct 202124.50.958 AU0.109 AU42.55 LD16,360,366 km16h55m-11°46'64.4°109.7°
Brightest14 Oct 202123.80.996 AU0.129 AU50.15 LD19,279,106 km19h09m-18°21'85.8°86.8°

Based on its absolute magnitude (Hₒ) of 25.2 and an albedo between 0.25 and 0.05, the estimated diameter of 2017 TJ4 is 25 - 55 m.

2017 TJ4- 2020-02-23
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.