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Pluto has a moderately eccentric and inclined orbit, ranging from 30 to 49 astronomical units (4.5 to 7.3 billion kilometres; 2.8 to 4.6 billion miles) from the Sun. Light from the Sun takes 5.5 hours to reach Pluto at its orbital distance of 39.5 AU (5.91 billion km; 3.67 billion mi).
From the planetary frame of reference, the ship's speed will appear to be limited by the speed of light — it can approach the speed of light, but never reach it. If a ship is using 1 g constant acceleration, it will appear to get near the speed of light in about a year, and have traveled about half a light year in distance. For the middle of ...
On July 14, 2015, at 11:50 UTC, New Horizons made its closest approach to Pluto, passing within 12,500 km (7,800 mi) at a speed of 13.78 km/s (49,600 km/h; 30,800 mph), while also coming as close as 28,800 km (17,900 mi) to Charon. Starting 3.2 days prior, the spacecraft mapped Pluto and Charon with 40 km (25 mi) resolution, enabling coverage ...
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Later studies indicate that the top cruise velocity that can theoretically be achieved by a Teller-Ulam thermonuclear unit powered Orion starship, assuming no fuel is saved for slowing back down, is about 8% to 10% of the speed of light (0.08-0.1c). [44] An atomic (fission) Orion can achieve perhaps 3%-5% of the speed of light.
Escape speed at a distance d from the center of a spherically symmetric primary body (such as a star or a planet) with mass M is given by the formula [2] [3] = = where: G is the universal gravitational constant (G ≈ 6.67 × 10 −11 m 3 ⋅kg −1 ⋅s −2 [4])
The mission heralded the same ideology as the Pluto 350 concept: small in size and cost-effective in scope, so that the spacecraft would be able to get to Pluto faster and be affordable to develop and launch. Described as a "radical" mission concept, the mission would see two spacecraft being sent to Pluto.
February 11, 2012: New Horizons reaches the distance of 10 AU from the Pluto system, at around 4:55 UTC. [30] July 1, 2013: New Horizons captures its first image of Charon. Charon is clearly separated from Pluto using the Long-Range Reconnaissance Imager (LORRI). [31] [32] October 25, 2013: New Horizons reaches the distance of 5 AU from the ...