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It's hard to justify counting Pluto without counting Eris: - Eris is more massive than Pluto (1.6e22kg versus Pluto's 1.3e22kg) - Eris is only slightly smalle
by chriswarbo 6y ago
It's hard to justify counting Pluto without counting Eris:
- Eris is more massive than Pluto (1.6e22kg versus Pluto's 1.3e22kg)
- Eris is only slightly smaller than Pluto, at 2326km diameter (more than your arbitrary 2000km cutoff)
- The orbit of Eris crosses Pluto's, so it may be closer to the Sun part of the time https://solarstory.net/img/articles/big/orbit-of-eris.jpg https://solarstory.net/img/articles/big/orbit-of-eris.jpg
- axaxs 6y agoAgreed. Eris is the one I was referring to in my comment. Instead of removing Pluto, just add one planet(Eris). On reread that probably wasn't clear, since I still think of Pluto as a planet.