2011 HP
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Today21 Mar 201922.31.430 AU0.483 AU188.00 LD72,280,734 km13h43m-18°23'148.4°21.4°
Brightest28 May 201916.21.041 AU0.033 AU13.01 LD5,003,014 km16h43m+13°46'144.3°34.6°
Approach31 May 201916.51.031 AU0.030 AU11.65 LD4,480,581 km18h20m+27°21'124.1°54.5°

Based on its absolute magnitude (Hₒ) of 22.1and an albedo between 0.25 and 0.05, the estimated diameter of 2011 HP is 100 - 225 m.

2011 HP- 2019-03-21
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 lightcurve 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 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.