R🜨
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Translingual[edit]
Alternative forms[edit]
- R⊕ [a common typographic substitution, as mathematical ⟨⊕⟩ was supported by Unicode a decade before astronomical ⟨🜨⟩]
- The R is not always italic.
Etymology[edit]
Symbol[edit]
R🜨
- (astronomy) Earth radius: a unit of distance, equal to the radius of the Earth, or 6370 km.
- the transition radius of 2.6 R🜨 between water worlds and planets with gaseous envelopes
- (sum of parts) The radius of the Earth specifically.
Usage notes[edit]
- R🜨 may be distinguished from r🜨, the latter not a unit of measurement but meaning radial distance from the Earth (geocentric distance). Unlike R🜨, r🜨 is used relative to our planet specifically.