- July 19, 2022
Earth and Jupiter Join Pluto as Non-Planets?
“The draft “Planet Definition” Resolution will be discussed and refined during the General Assembly and then it (plus four other Resolutions) will be presented for voting at the 2nd session of the GA 24 August between 14:00 and 17:30 CEST.”
Reader (Renowned Planetary Scientist) note: IAU’s definition 5A just passed – the one that excludes Pluto as a planet. Look at the murky wording, it also excludes Earth and Jupiter because their zones are not cleared (NEOs, Trojans, respectively).
“RESOLUTION 5A … (1) A planet1 is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.”