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#OnThisDay First #Mars #Trojan Eureka discovered (1990).
Birth Anniversary of English #Biochemist Frederick Gowland Hopkins (1861). He was co-awarded the Nobel Prize in Physiology or Medicine in 1929 for the discovery of #Vitamins.
Happy Birthday Nicole Kidman (1967)
Today is World #RefugeeDay.
A #Trojan is a small celestial body (mostly asteroids) that shares the orbit of a larger one, remaining in a stable orbit approximately 60° ahead or behind the main body.
In the Solar System, most known trojans share the orbit of Jupiter. In other planetary orbits only nine Mars trojans, 28 Neptune trojans, two Uranus trojans, and a single Earth trojan, have been found to date.
@kzoneind propably because said objects tend to be on unstable shoehorse orbits relative to the dominant object they do co-orbit.
Thus the amount of them is proportional to the gravity of said orbit-dominating object and their own orbital dominance.