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synodic    
a. 会议的;会合的

会议的;会合的


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  • the moon - Is it possible to explain the difference between synodic . . .
    In a 29 53-day synodic month, the Earth moves 29 1° around the Sun, and the Moon moves 389 1° = 360° + 29 1° around the Earth The 2 21-day difference between synodic and sidereal months is the time the Moon takes to cover the additional 29 1° at 13 18° day Also consider that in one year there are 13 37 sidereal months or 12 37 synodic
  • What is the difference between the Synodic the Sidereal Periods?
    The synodic period is the (average) time between oppositions Or, more generally, it is the time for a planet to reach a given position relative to the Earth This latter definition can also be applied to the synodic period of Venus and Mercury
  • Synodic period of planets - Astronomy Stack Exchange
    The synodic period of planets are tabulated for centuries and it is defined as the time interval between two consecutive repetition of phase, phase in this case meaning the terrestrial measure of its angular position and speed relative to the Sun
  • What causes the variation in the length of the synodic month, BESIDES . . .
    The worst "offender", by far, is the eccentricity, which is why it's commonly blamed for the variation in the synodic month length The size of the Moon's mean eccentricity does make a significant contribution to the synodic (and sidereal) month length variation However, because the Moon's orbit is precessing, changing eccentricity, and
  • planet - Synodic Day and Sidereal Day - Astronomy Stack Exchange
    $\begingroup$ Sidereal and synodic days do not depend on one another The sidereal day depends on the rotation speed alone The synodic day depends on both, the orbital speed and the rotational speed, thus are independent, given an arbitrary choice of planetary parameters $\endgroup$ –
  • sidereal period - Is the difference in time between the sideral and . . .
    The days listed are the average sidereal and synodic periods After 27 32 days (one sidereal month), the Moon is again aligned with Regulus The Sun is farther east in the sky, so it takes a few more days for the Moon to catch up with the Sun and complete a synodic month (29 53 days) Note: The distances travelled are approximate in this figure
  • How would one calculate the synodic period between 3 planets?
    $\begingroup$ You can find the synodic period between planets 1 and 2, and then between planets 2 and 3, and then find a common integer multiple of those numbers However, as @uhoh notes, it's possible no such multiple exists
  • orbit - Which approximations are required for the synodic period . . .
    for the synodic period between two planets orbiting the Sun is derived in a similar way to the derivation
  • terminology - Term for the period between planet alignments . . .
    The time between oppositions of Mars (or another planet) is called its synodic period That is the length of time it takes for Mars to be in the same position in Earth's sky relative to the sun, and is about 780 days It contrasts with the sidereal period, which is the length of time the planet takes to orbit the sun
  • Orbital terminology for satellites relative to one another
    For celestial bodies in the solar system, the synodic period (with respect to Earth and the Sun) differs from the sidereal period owing to the Earth's motion around the Sun For example, the synodic period of the Moon's orbit as seen from the Earth, relative to the Sun, is 29 5 mean solar days, since the Moon's phase and position relative to





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