More extended analyses in the past 10 years have lowered this value to about one-tenth of an Earth mass.
If 6400 kilometers is accepted (from other sources) as the upper limit of the diameter, then Pluto must be at least 1.4 times as dense as Earth. New Horizons launched on Jan. 19, 2006 and conducted a six-month-long reconnaissance flyby study of Pluto and its moons in summer 2015, culminating with Pluto closest approach on July 14, 2015. Assuming that both Pluto and Charon have the same composition and hence the same average density, find the location of the center of mass of this system relative to the center of Pluto. Pluto's strange orbit around the sun crosses Neptune's orbit. You would use Kepler’s Third law (T² = (4π • R³)/(G • M)) solving for mass. Mean distance from Pluto (km) 19,596 Sidereal orbit period (days) 6.3872 Sidereal rotation period (days) 6.3872 Orbital inclination to Pluto (deg) 0.00005 Orbital eccentricity 0.0 Equatorial radius (km) 606 Mass (10 21 kg) 1.586 Mean density (kg/m 3) 1700 Surface gravity (m/s 2) 0.29 Escape velocity (km/s) 0.59 Bond albedo 0.25 Apparent visual magnitude 16.8
Analysis of the observations of Neptune indicates a reciprocal mass of Pluto of 1,812,000 (0.18 Earth masses). Pluto officially became Pluto on March 24, 1930. You would use Kepler’s Third law (T² = (4π • R³)/(G • M)) solving for mass. As a result, for 20 years of its 248 year orbit around the sun, Pluto is closer to the sun than Neptune. Here the barycenter is completely outside of Pluto all the time, so you could say this is a (dwarf-)double planet system. Charon is 12% the mass of Pluto, and they're BOTH tidally locked! Interesting Facts about the Dwarf Planet Pluto. The name was announced on May 1, 1930, and Venetia received five pounds (£5) as a reward. Mass of the Moon = 7.34767309 × 1022 kilograms Mass of Pluto= 1.30900 × 1022 kilograms Pluto has 66% of the diameter of the Earth’s moon and 18% of its mass. It gets its name from Pluto the Roman god of the Underworld. If the density is the same as that of Earth, the diameter would be 7200 kilometers. Orbital elements were computed which include the perturbations of the four major planets. Plugging in the orbital information for Pluto and its moon Charon, astronomers calculated its mass to be 1.31 x 10 22 kg – less than 0.24% the mass of Earth.
Although the distance varies, they are often about 1.99×10^4 km apart, center-to-center. The name was announced on May 1, 1930, and Venetia received five pounds (£5) as a reward. Its largest moon, Charon, is close enough in size to Pluto that it has become common to refer to the two bodies as a double system.Pluto is designated by the symbol ♇. Positions and orbit of Pluto-Positions of Pluto were obtained from photographs taken by M. L. Humason in 1919 with the io-inch Cooke triplet and from photographs taken with the 60- and 100-inch reflectors 111 1930. Pluto is not visible in the night sky to the unaided eye. Postdiscovery determinations of the mass of Pluto from analysis of the observed motions of Uranus and Neptune reduced this value to about one Earth mass. Pluto's diameter is approximately 2370 km, and the diameter of its satellite Charon is 1250 km. Pluto was named by an 11 year old girl, Venetia Burney.
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