M♁

Alternative forms

 * The M is not always italic.

Etymology

 * M (mass) and subindex ♁ (Earth). The use of $⟨M_{♁}⟩$ rather than $⟨M_{🜨}⟩$ seems particularly common in German-language texts.

Symbol

 * 1)  Earth mass: a unit of measurement, equal to the mass of planet Earth, which is 6&times;1024 kg or 3&times;10&minus;6 M☉.
 * The dynamically cold planetesimal disk was 35 M♁, with an inner edge at 15.5 AU and an outer edge at 34 AU.
 * 1)  The mass of the Earth specifically.

Synonyms

 * M🜨
 * (English) ME