TY CONF TI Estimation of short-period disturbances in the motion of NEAs in the presence of an inverse-square perturbing acceleration KW celestial mechanics; minor planets KW asteroids: general; methods: analytical; reference systems JO Modern astronomy: from the Early Universe to exoplanets and black holes AU Sannikova, T.. PY 2024 PB Special Astrophysical Observatory of the Russian Academy of Sciences