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11 sty 2024 · Surface Pressure: ~13 microbar Surface temperature: 24 - 38 K (-247 - -233 C) Scale height: ~18 km lower atmosphere, ~50 km above 30 km Mean molecular weight: ~28 Atmospheric composition: 99% Nitrogen (N 2), 0.5% Methane (CH 4), 0.05% Carbon Monoxide (CO), trace HCN, C 2 H x hydrocarbons
- Pluto
General Information. Pluto Fact Sheet; Reference Books on...
- Notes on the Factsheets
Most values listed in the factsheets are from the following...
- Planetary Fact Sheets
Author/Curator: Dr. David R. Williams,...
- Pluto
1 lut 1988 · For Pluto the three primary components are assumed to be CH4 ice (PCH4 = 0.53 g/cm3), H20 ice (PH20 = 0.92 g/cm3), and rock 2.4 < prock < 7.9 g/cm3). This suite of constituents is in accordance with condensation models of outer solar nebula and the observed presence of CH4 on Pluto.
15 wrz 1988 · The mean density of the Pluto-Charon system is now accurately known at 1.99±0.09 g cm –3 (With formal errors five times smaller) 1, through observations of total occultations and transits 2....
18 mar 2016 · Pluto's small size and low mass mean that it has a density of 1.86 grams per cubic centimeter according to recent measurements by New Horizons, about 40 percent of Earth's density.
15 paź 2024 · When these characteristics are combined with what is known about its density and composition, Pluto appears to have more in common with the large icy moons of the outer planets than with any of the planets themselves.
Because of the orbital interactions between Pluto and its moon Charon, Pluto’s mass is well known and understood (1.31 x 1022 kg). Having a more precise diameter gives scientists the ability to more accurately calculate Pluto’s average density.
Density (water=1) 2.095. Surface gravity m/s 2. 0.62. Pluto was discovered by C. Tombagh in 1930, using the same techniques by which Neptune was found. But Pluto, much smaller than expected, is too tiny to affect faraway Uranus, so it's discovery was an accident.
