2021-08-01, 01:10 AM
I just re-ran the ephem for 2021 OY & 2021 OZ. They appear in my sky to be visually separated by 12° while up 37° and 49° respectively at 05:18 CDT 8/1/2021. The difference in their distance from me is 1,366,26Km with OZ being the farther away but the brighter @16.4mag. Both have a phase angle of ~90°. This shows how different the rocks are - OZ is much larger at 62-140 meters! At the noted time, both are moving across my line of vision ~22.5"/minute. Fun stuff and nice to have software making this an adventure.