Terminology: Dwarf Planet vs. ProtoPlanet

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SUMMARY

The discussion clarifies the distinction between "dwarf planets" and "protoplanets" within the context of solar system terminology. Protoplanets, such as Pluto, are defined as planetesimals in a young, forming system with the potential to evolve into full-fledged planets, while dwarf planets are considered to have reached a stable state and will not develop further. The International Astronomical Union (IAU) categorizes Pluto as a dwarf planet, reinforcing this classification. The terminology used in educational materials must accurately reflect these definitions to avoid misleading interpretations.

PREREQUISITES
  • Understanding of planetary formation processes
  • Familiarity with the International Astronomical Union (IAU) classifications
  • Knowledge of solar system objects and their characteristics
  • Basic concepts of celestial mechanics
NEXT STEPS
  • Research the IAU's definitions and classifications of celestial bodies
  • Explore the formation and evolution of protoplanets in proto-planetary disks
  • Study the characteristics and classifications of dwarf planets
  • Investigate the historical context of Pluto's reclassification as a dwarf planet
USEFUL FOR

Students, educators, and astronomy enthusiasts seeking clarity on the definitions and classifications of celestial bodies, particularly in the context of planetary science and educational resources.

DaveC426913
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For a Grade 9 textbook:

"Many more objects exist in the solar system besides the eight major planets. These are smaller and include moons, comets, protoplanets, such as Pluto, and tiny grains of dust and ice."

Is this acceptably-worded or is it misleading?

My take is that the term "protoplanet" refers to planetesimals that are part of a young still-forming system and have the potential to grow into planets. "Dwarf planets" are pretty much all they're ever going to be.
 
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I agree. Protoplanet suggests they're still in the process of forming, which is certainly not the case.
 
I'm hoping for an authoritative answer from someone who knows these things so I can defend it to the editor.
 
The IAU discussion about pluto calls them dwarf planets.
I have only seen protoplanet in the context of a proto-planetary disk
 

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