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Transit of Mars from Jupiter : ウィキペディア英語版 | Transit of Mars from Jupiter A transit of Mars across the Sun as seen from Jupiter takes place when the planet Mars passes directly between the Sun and Jupiter, obscuring a small part of the Sun's disc for an observer on Jupiter. During a transit, Mars can be seen from Jupiter as a small black disc moving across the face of the Sun. No one has ever seen a transit of Mars from Jupiter, nor is this likely to happen in any foreseeable future. The next one will take place on July 8, 2040. == Explanation ==
A transit could hypothetically be observed from the surface of one of Jupiter's moons rather than from Jupiter itself. The times and circumstances of the transits would naturally be slightly different. Mars's satellites Phobos and Deimos would theoretically be visible at the same time. However, the angular diameter of Phobos would be about 0.01" and Deimos would be less than 0.005", and their maximum separation from Mars would be roughly 3.0" and 9.0" respectively, making them very hard to see, indeed. The Mars-Jupiter synodic period is 816.51 days. It can be calculated using the formula period = 1/(1/P - 1/Q), where P is the orbital period of Mars (686.98 days) and Q is the orbital period of Jupiter (4330.595 days). The inclination of Mars's orbit with respect to Jupiter's ecliptic is 1.44°, which is less than its value of 1.85° with respect to Earth's ecliptic.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Transit of Mars from Jupiter」の詳細全文を読む
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