ヤルコフスキー効果
On 9 March 2021, using radar observations from Goldstone taken on 3-8 March and three positive detections of the stellar occultation on 7 March 2021, Apophis became the asteroid with the most precisely measured Yarkovsky effect of all asteroids, at a signal-to-noise ratio (SNR) of 186.4, surpassing 101955 Bennu (SNR=181.6).