Asteroid 2021 PH27 with the Highest Solar System Precession Rate

Ireneusz Wlodarczyk

We presented the orbit of the asteroid 2021 PH27. According to the JPL NASA classification 1 , 2021 PH27 belongs to the Atira group asteroid. Their orbits are contained entirely within the orbit of the Earth (Q < 0.983 au). Also known as an Interior Earth Object. Asteroid 2021 PH27 has the highest Solar System precession rate, as far. It is greater than the observed precession rate of Mercury and is about 53.418”/century.

Proceedings of the Polish Astronomical Society, vol. 12, 273-275 (2022)

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