Arecibo range-Doppler image of 2005 UP156 with 75-m resolution clearly show the two nearly equal size components with elongated shapes and their long axes pointed toward each other.
Arecibo Observatory/NASA
2017-06-12
<a rel="nofollow" class="external free" href="https://www.hou.usra.edu/meetings/lpsc2019/pdf/2945.pdf">https://www.hou.usra.edu/meetings/lpsc2019/pdf/2945.pdf</a>