Multiple ChoicePluto travels in a fairly elliptical orbit around the Sun. At its closest distance of 4.43×1094.43\times10^9 km, its orbital speed is 6.12 km/s. At its farthest, its orbital speed reduces to just 3.71 km/s. How far is it from the Sun at this point (in km)?76views1rankHas a video solution.
Multiple ChoiceA comet is in a highly elliptical orbit around the Sun with a period of 2400 years. If this comet has a mass of approximately 5×10145\times10^{14} kg, what is the total energy of its orbit?67viewsHas a video solution.
Textbook QuestionComets move around the sun in very elliptical orbits. At its closet approach, in 1986, Comet Halley was 8.79 x 10⁷ km from the sun and moving with a speed of 54.6 km/s. What was the comet’s speed when it crossed Neptune’s orbit in 2006?8viewsHas a video solution.