* <math>m_1</math>[[بارستایی زەوی]] (<math>M_\bigoplus =5.972\times10^{24} kg </math><math>M_\bigoplus =5.9722\times10^{24}kg</math>), <ref>https://en.wikipedia.org/wiki/Earth_mass</ref><ref>The cited value is the recommended value published by the International Astronomical Union in 2009 (see 2016 "Selected Astronomical Constants" in ). The recommended value in 1976 was (5.9742±0.0036)×10<sup>24</sup> kg, see IAU (1976) System of Astronomical Constants.</ref>