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1 day ago · The term “Mercury retrograde” refers to the planet’s backward motion as seen from here on Earth. Given how predictably stars move across the sky from night to night, all in the same ...
4 days ago · Each synodic day, this gradual motion is a little less than 1° eastward (360° per 365.25 days), in a manner known as prograde motion. Certain spacecraft orbits, Sun-synchronous orbits, have orbital periods that are a fraction of a synodic day.
3 days ago · We found that the results for the prograde and retrograde emitters with the same motion class exhibited similar features, as shown in Figs. 3, 4 and 5. On the other hand, from Fig. 6 , we saw that the results for the emitters with different motion classes showed distinct features.
2 days ago · The prograde orbits are those spinning with the disk. The resulting prograde-to-retrograde ratio, P/R, of these particles is 1.2: 1: 1.2 1 1.2:1 1.2 : 1 in the P00 model and 0.8: 1: 0.8 1 0.8:1 0.8 : 1 in the P60 model. However, these average ratios have little significance because the ratio depends on the radius, as we discuss below.
4 days ago · In celestial mechanics, the specific relative angular momentum (often denoted or ) of a body is the angular momentum of that body divided by its mass. [1] In the case of two orbiting bodies it is the vector product of their relative position and relative linear momentum, divided by the mass of the body in question.
5 days ago · Retrograde motion of Mars. The following animated figure would be useful for a better understanding of the Retrograde motion of Mars. Thanks to the unkown creator of this animated image which was returned in Google search on web. .....
4 days ago · The more distant group—made up of Ananke, Carme, Pasiphae, and Sinope— has retrograde orbits around Jupiter. The closer group— Leda, Himalia , Lysithea, and Elara—has prograde orbits.
