M♁

Translingual

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

M_♁

1. (astronomy) Earth mass: a unit of measurement, equal to the mass of planet Earth, which is 6×10²⁴ kg or 3×10⁻⁶ M_☉.

   The dynamically cold planetesimal disk was 35 M_♁, with an inner edge at 15.5 AU and an outer edge at 34 AU.

2. (sum of parts) The mass of the Earth specifically.

Synonyms

• M_🜨
• (English) M_E