247:.) If there is any authoritative publication defining this term, it is not cited in this article. If it does not exist, this article should not be in Knowledge (XXG). The term supergiant planet appears a few times, but very rarely, in the scientific literature, but always (as far as I can determine) in an informal way, i.e., without a definition. It would be very nice to have a classification scheme for planets, and I'm sure many will be seriously proposed, eventually. But at present, there are too few planets known. Before anyone came up with words like "giant star" and "supergiant star" and the like, many thousands of stars were known. When thousands of planets, their masses, radii, etc., are known, then it will be time to sensibly classify them.
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a white dwarf both fit this definition. The radius of a cold body is a bimodal function of its mass (composition and temperature being held equal), that is, as mass increases, radius increases, and then decreases. For example, the more massive a white dwarf is, the smaller its radius. The term "largest cold mass" denotes that mass at which the radius of a cold body is maximum. The value may depend on composition or temperature.
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A "cold body" is either a body that does not generate energy, or a body that does not generate energy by fusion. The first definition would exclude the Earth, since it generates energy by radioactive decay, so it is clear that the second definition is what is meant in this article. A planet and
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on a fantasy website, which I believe is no longer up. There is at least one other fantasy website that uses the term. But, that is irrelevant to a serious encyclopedic article.
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I do not believe that any authoritative source has defined the word ``supergiant planet``, although the term has been used in a few scholarly publications. (Unlike the term
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This article is confusing to a layman, and needs the attention of an expert. Specifically, what is the definition of "largest cold mass"?
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Not only is this confusing, it's directly contradictory of itself. Rossheth 18:50, 7 December 2006 (UTC)
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