4660 Nereus, provisional designation 1982 DB, is a small (about 0.33 kilometres (0.21 mi)) asteroid. It was discovered by Eleanor F. Helin on 28 February 1982, approximately a month after it passed 4.1 million km (11 LD) from Earth. [1] Nereus …

Nereus is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified Nereus as a "Potentially Hazardous Asteroid" due to its predicted close pass (es) with Earth. Nereus orbits the sun every 661 days (1.81 years), coming as close as 0.95 AU and reaching as far as 2.02 AU from the sun.

2022年1月10日 · These images and animation represent NASA radar observations of 4660 Nereus on Dec. 10, 2021, before the asteroid's close approach on Dec. 11, when it came within 2.5 million miles (4 million kilometers) of Earth.

2024年3月1日 · Focusing on the asteroid 4660 Nereus, this paper studies the equilibrium points of it and the potentially natural, long-lifetime orbits subject to perturbations from both the asteroid's non-spherical gravitational field and the solar radiation pressure (SRP).

• (4660) Nereus轨道可视化仿真(旋转系) • (4660) Nereus轨道日心距分析 • (4660) Nereus轨道地心距分析 • (4660) Nereus轨道计算 • (4660) Nereus轨道摄动分析 • (4660) Nereus轨道变化分析 • (4660) Nereus视星等计算分析 • (4660) Nereus视位置计算分析 • (4660) Nereus地基望远镜观测 ...

2021年12月2日 · 4660 Nereus, first discovered in 1982, is special – not because it is dangerous, but because it flies by Earth with relative frequency. Its 1.82-year orbit around the Sun brings it near to us roughly every 10 years or so, although although in space terms 'near' is …

2024年9月15日 · On 11 December 2021 at 11 UTC, the near-Earth asteroid (4660) Nereus passed the Earth at a distance of 0.0263 au, reaching about 13th magnitude that made it an excellent target for ground-based observations.

Nereus is the most accessible kilometer-sized object known and a leading candidate for exploration by spacecraft. Its delta-V for rendezvous is smaller than the Moon's and also smaller than that for any other asteroid with H less than 19.5 …

It was proposed as a possible target for the NASA Near-Earth Asteroid Rendezvous (NEAR) and for JAXA Hayabusa spacecraft. The lightcurve analysis and the radar shape modeling revealed a long rotational period of ≅ 15.16 ± 0.04 h [1, 2].

4660 Nereus is a small (1 km in diameter) asteroid, discovered by Eleanor F. Helin on February 28, 1982. It is named after Nereus, a Titan in [[Greek mythology. Nereus is potentially a very important asteroid. It is an Apollo and Mars-crosser asteroid, with an …