Planets of this class have a molten core and are usually found in a star's
habitable zone. They are typically 10,000 to 15,000 kilometers in diameter.
Their atmospheres still contain hydrogen compounds. They will cool further
eventually becoming class F.
61 Cygni 4
Altair 3
Arcturus 3
Capella 3
Canopus 4
Janus 6
Rigel 3
Vega 3
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