2020 HF4
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Today20 Sep 202024.81.007 AU0.074 AU28.74 LD11,048,987 km17h25m-78°07'89.9°85.9°
Approach4 Nov 202023.50.993 AU0.041 AU16.10 LD6,189,014 km21h00m-16°34'90.4°87.2°
Brightest5 Nov 202023.50.993 AU0.041 AU16.11 LD6,191,852 km21h01m-14°41'90.4°87.2°

Based on its absolute magnitude (Hₒ) of 27.4 and an albedo between 0.25 and 0.05, the estimated diameter of 2020 HF4 is 9 - 20 m.

2020 HF4- 2020-09-20
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.