irbinator OP t1_j3kfgei wrote on January 9, 2023 at 4:15 AM

Reply to comment by GetsGold in TIL Pluto hasn't completed an orbit around the sun since its discovery. Pluto's orbit takes about 248 years, and Pluto was discovered in 1930. by irbinator

Ah, you’re completely right. Thanks! I always mix up Ceres and Eris. I’ll update my comment now.

irbinator OP t1_j3k2u45 wrote on January 9, 2023 at 2:43 AM

Reply to comment by 10secondmessage in TIL Pluto hasn't completed an orbit around the sun since its discovery. Pluto's orbit takes about 248 years, and Pluto was discovered in 1930. by irbinator

I didn't, actually. Source?

irbinator OP t1_j3k0pq9 wrote on January 9, 2023 at 2:28 AM

Reply to comment by theAusterityClinic in TIL Pluto hasn't completed an orbit around the sun since its discovery. Pluto's orbit takes about 248 years, and Pluto was discovered in 1930. by irbinator

Hyuck!

irbinator OP t1_j3k0kmx wrote on January 9, 2023 at 2:27 AM

Reply to comment by farmerarmor in TIL Pluto hasn't completed an orbit around the sun since its discovery. Pluto's orbit takes about 248 years, and Pluto was discovered in 1930. by irbinator

Right now I'm reading Dr. Mike Brown's book How I Killed Pluto And Why It Had It Coming. Only a couple of pages in, but so far it's been an interesting read.

Basically, he had discovered a new possible planet (Eris, aka Xena), and his discovery led scientists to finally formally define a planet for the first time. The new definition re-categorized Pluto and Eris as dwarf planets. Humbly, Dr. Brown was satisfied with that conclusion.

The book is what led me down this rabbit hole!

EDIT: Eris, not Ceres.