The first parameter, «9E» is the planet's mass, expressed in equivalent masses of solar system planets. (discovermagazine.com)
Each one compresses the equivalent mass of half a million Earths into a ball just 12 miles (20 kilometers) across, or about the length of New York's Manhattan Island. (sciencedaily.com)
A: When the stone is in the boat it is displacing an equivalent mass of water. (sciencedaily.com)