Earth mass

astrophysics The usual reference mass for comparative indication of planetary masses, being the mass of Earth, = 5.974 2~ × 10²⁴ kg (6.585 4~ × 10²¹ short ton). A new, more elaborate, but unconfirmed evaluation
[Gundlach J. H., Merkowitz S. M. Phys. Rev. Letters Vol. 85, 2869-72 (2000)] gives 5.972 245(82) × 10²⁴ kg.