perihelion motion 近日点移动 precession of perihelion 近日点进动 perihelion effect 近日点效应 advance of the perihelion 近日点进动 perihelion precession 近日点进动 at the distance 在远处 in the distance 在远处,在很远的那边 longitude of perihelion 近日点黄经 相似...
In theory, the closest Mars and Earth would get is when Mars reaches its closest point to the sun (perihelion) and Earth is at its farthest (aphelion). This would bring the two planets within 33.9 million miles (54.6 million kilometers) of each other — but this has not yet happened in...
If you were to travel to a star 100 light-years from Earth at a speed of 2.60 * 10^8 m/s, what would you measure as your distance traveled to the star? Take the radius of the earth's orbit to be 1.5 x 10^{11} m. a. Using a year to be 365 day...
What is the perihelion distance of Eris? What is the elevation of the Hubble Telescope? What is the angular distance above the horizon? How far away from Earth are exoplanet systems? How far away from Earth is the nearest Earth-like exoplanet?...
Hills, J. G.: Dynamical constraints on the mass and perihelion distance of Nemesis and the stability of its orbit. Nature 311, 636-638 (1984)Hills, J.G.: Dynamical constraints on the mass and perihelion distance of Nemesis and the stability of its orbit. Nature 311, 636-638 (1984)...
The model was already applied to this comet (Capria et al., 2000b): At that time only the results of the observations obtained shortly after the perihelion were available. Now much more data have been published and we present more refined and complete results about the production rates of ...
Earth aphelionasteroid beltradioactive nuclidesnuclear cosmochronologyIt has been argued that the decay rates of several radioactive nuclides are slightly lower at Earth's aphelion than at perihelion, and that this effect might depend on heliocentric distance. It might then be expected that nuclear ...
At perihelion on Feb. 9, 1986, Halley's comet was 8.79 x 10^7 km from the sun and was moving at a speed of 54.6 km/s relative to the sun. Calculate its speed a) when the comet was 1.16 x 10^8 km from ...
What is the perihelion distance of Halley's Comet? What is the distance between the Earth and the Sun? What is angular size in astronomy? What is the distance between the Earth and the nearest star? What is the angular size of the Sun? What is the moon's angular size in arcminutes?
The mass of the earth is 5.97 x 10^{24} kg, the mass The dwarf planet Eris orbits the sun every 557 years. How does its average distance compare to that of Pluto? A 380000 m asteroid orbits the sun. The asteroid is 4 AU from the Sun...