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For example, if a TNO is incorrectly assumed to have a mass of 3.59 × 10 20 kg based on a radius of 350 km with a density of 2 g/cm 3 but is later discovered to have a radius of only 175 km with a density of 0.5 g/cm 3, its true mass would be only 1.12 × 10 19 kg.
The gram per cubic centimetre is a unit of density in the CGS system, and is commonly used in chemistry. It is defined by dividing the CGS unit of mass, the gram, by the CGS unit of volume, the cubic centimetre. The official SI symbols are g/cm 3, g·cm −3, or g cm −3. It is equivalent to the units gram per millilitre (g/mL) and kilogram ...
19.1 g/cm 3: WEL (near r.t.) 19050 kg/m 3: LNG (at r.t.) 19.1 g/cm 3: CRC (near r.t.) 19.1 g/cm 3: 93 Np neptunium; use: 20.2 g/cm 3: WEL (near r.t.) 20450 kg/m 3: LNG (at r.t.) 20.2 g/cm 3: CRC (near r.t.) 20.2 g/cm 3: 94 Pu plutonium; use: 19.816 g/cm 3: WEL (near r.t.) 19816 kg/m 3: LNG (at 20 °C) (19.816 rel. to water at 4 °C) CRC (near r ...
The result reported by Charles Hutton (1778) suggested a density of 4.5 g/cm 3 (4 + 1 / 2 times the density of water), about 20% below the modern value. [16] This immediately led to estimates on the densities and masses of the Sun, Moon and planets, sent by Hutton to Jérôme Lalande for inclusion in his planetary tables.
The density of the clouds is highly variable with the densest layer at about 48.5 km, reaching 0.1 g/m 3 similar to the lower range of cumulonimbus storm clouds on Earth. [ 54 ] The cloud cover is such that it reflects more than 60% of the solar light Venus receives, leaving the surface with typical light levels of 14,000 lux , comparable to ...
The choice of solar mass, M ☉, as the basic unit for planetary mass comes directly from the calculations used to determine planetary mass.In the most precise case, that of the Earth itself, the mass is known in terms of solar masses to twelve significant figures: the same mass, in terms of kilograms or other Earth-based units, is only known to five significant figures, which is less than a ...
The similarity in size and density between Venus and Earth suggests that they share a similar internal structure: a core, mantle, and crust. Like that of Earth, the Venusian core is most likely at least partially liquid because the two planets have been cooling at about the same rate, [73] although a completely solid core cannot be ruled out. [74]
Vesta (radius 262.7 ± 0.1 km), the second-largest asteroid, appears to have a differentiated interior and therefore likely was once a dwarf planet, but it is no longer very round today. [74] Pallas (radius 255.5 ± 2 km ), the third-largest asteroid, appears never to have completed differentiation and likewise has an irregular shape.