2011 ST12
ephemeris date magn radius delta (AU) delta (LD) delta (km) ra dec elong phase
Brightest21 Sep 202422.31.035 AU0.056 AU21.95 LD8,440,758 km03h17m+33°07'121.5°55.8°
Approach26 Sep 202422.61.015 AU0.051 AU19.82 LD7,621,995 km05h01m+50°48'102.6°74.6°
Today9 Feb 202527.31.038 AU0.460 AU178.93 LD68,793,123 km15h40m-17°40'83.2°70.7°

Based on its absolute magnitude (Hâ‚’) of 26.4 and an albedo between 0.25 and 0.05, the estimated diameter of 2011 ST12 is 15 - 30 m.

2011 ST12- 2025-02-09
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.