2022-01-14, 03:29 PM
I've made some discoveries while looking over the ephemerides. Although this rock is large and not especially close to the Earth/Moon system, there does appear to be a small amount of gravitational perturbation. The orbit and positions do get a slight bit of tweaking as it makes its pass. Compared with those at Horizons, they can be off by as much as 3 arc minutes on prime night (Jan. 18th). Although the rock is very bright and should be picked up as an interloper in large binoculars, it may behoove one to run the position ephemeris using osculating elements just prior to hunting it down. YMMV.