Ooo, updated estimates of size, brightness, and spin of two of the #LucyMission targets among the Jupiter Trojan asteroids, #Orus and #Eurybates. Both have super-dark, comet-like surfaces, which we already knew, and retrograde rotation, which we didn't know before. Knowing the spin pole orientation is super important for planning flyby science.

#SciencePaper #PlanetaryScience #Space #Astronomy #Asteroid https://iopscience.iop.org/article/10.3847/PSJ/acaf79