2015 YQ1

[6] It experienced a close encounter with the Earth on 2015 December 22 at 0.0037 AU.

2015 YQ1 was discovered on 2015 December 19 by A. D. Grauer observing with the 1.5-m reflector telescope at the Mount Lemmon Survey.

[2] 2015 YQ1 is currently an Apollo asteroid (Earth-crossing but with a period greater than a year).

Its semi-major axis (currently 1.00134 AU) is similar to that of Earth (1.00074 AU), but it has a relatively high eccentricity (0.40398) and low orbital inclination (2.4865°).

Asteroid 2015 YQ1 follows an asymmetrical horseshoe path with respect to our planet; the value of its relative mean longitude oscillates about 180°, but enclosing 0°; its orbital evolution is rather unstable.

Animation of 2015 YQ1's orbit relative to Sun and Earth
2015 YQ1 · Sun · Earth