0.10
*ME in Earth masses.
**Λ/ΛE = M²/P, in Earth masses squared per year.
***µ = M/m, where M is the mass of the body, and m is the aggregate mass of all the other bodies that share its orbital zone.
6 Earth masses. Mass of remaining material= ~5.26 Earth masses or 1.1% (see Solar System#Notes and List of Solar System objects by mass)
^ a b c E. W. Thommes, M. J. Duncan, H. F. Levison (2002).
055 Earth masses. It has no atmosphere, no natural satellite, and, to date, no observed geological activity save that produced by impacts. Its relatively large iron core and thin mantle have not yet been adequately explained.
A calculation of thermal evolution shows that Saturn could have originated with the gravitational collapse of gaseous hydrogen and helium from the original solar nebula onto a massive ice-rich core of perhaps 10 to 20 Earth masses.
The new planet, later named Pluto, turned out to be disappointingly small, perhaps only one Earth mass but probably only about 1/10 Earth masses or smaller (in 1979, when Pluto's satellite Charon was discovered, ...
Modern estimates range from 1 to 100 Earth masses. Part of the uncertainty concerns the reality of a hypothesized massive "inner Oort cloud" -- or "Kuiper belt" (if the distribution is flattened)--of comets that would exist at distances from the Sun ...
He gave P a mass of 20 Earth masses and a magnitude of 11. In 1931, after the discovery of Pluto, he issued another elliptical orbit for P: distance of 75.5 AU, period of 656 years, mass of 50 Earth masses, eccentricity of 0.
2 Earth masses in tight orbits with respective periods of 4.31, 9.62, and 20.5 days, while HD 181433 has a planet of 7.6 Earth masses in an orbit of 9.37 days, in addition to a larger, more Jupiter-like planet.)
THE PLANETS ...
Notes: Mass is given in Earth masses (1 ME = 5.977 × 1024 kilograms); diameter is the ``volumetric mean diameter'' that takes into account the planet's oblateness; ...
For Earth, it is 1 cm; for Jupiter, at about 300 Earth masses, it is about 3 m; for the Sun, at 300,000 Earth masses, it is 3 km. For a 3"solar mass stellar core remnant, the Schwarzschild radius is about 9 km.
The new survey has turned up two more planets - one seven Earth mass planet orbiting in 433 days, and one 3.1 Earth mass planet orbiting in 36.6 days.
The mission will also investigate larger terrestrial planets that have 2 to 10 Earth masses, or 1.3 to 2.2 times its radius/diameter.
We infer indirectly that the small core (perhaps a few tens of Earth masses) is rocky. Liquid Metallic Hydrogen
The inner layers of highly compressed hydrogen are in a state that has never been produced on the Earth.
A black hole of radius 1 m is about 100 Earth masses. The temperature is inversely proportional to the mass and a one-gram black hole has a temperature of 1026 kelvins. It evaporates by Hawking radiation in 10-27 second.
We know the following: PlanetPlanet MassMinimum Distance from Earth (Earth Masses)(106 km)
Mercury
0.0549 ...
Solar radius = 695,990 km = 432,470 mi = 109 Earth radii Solar mass = 1.989 1030 kg = 4.376 1030 lb = 333,000 Earth masses Solar luminosity (energy output of the Sun) = 3.846 1033 erg/s ...
Even so, the amount of material contained in the Oort cloud is thought to be fairly small (of the order of tens of Earth masses) since the majority of the objects are expected to be small (measured cometary nuclei have diameters of ~20 km or less) ...
Although Saturn's core is considerably denser than water, the average specific density of the planet is 0.69 g/cm3 due to the gaseous atmosphere. Saturn is only 95 Earth masses, compared to Jupiter, ...
The observations indicate that those x-rays are generated by a black hole accreting matter from a young, massive companion star at a rate of about one Earth mass every four years.
hole is a region of space in which the gravitational field is so powerful that nothing, including electromagnetic radiation , can escape its pull after having fallen past its event horizon....
, or on the surface of a larger-than-earth mass object.
 See also: Earth, Mass, Solar, Sun, Planet
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