Questions tagged [sidereal-period]

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1answer
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How long was a lunar month in ancient times?

As the Moon is getting farther and farther from Earth, it's natural that the time it takes to circle around our planet is going to increase, thus the month will be longer. However, I read that the ...
1
vote
1answer
357 views

Right ascension and sidereal time difference

I've read quite a few articles about this and watched visualisations but I still struggle to get a mental map of how this works I understand that on March 21/22 RA 0 is on my meridian at local noon. ...
2
votes
2answers
187 views

Is the difference in time between the sideral and synodyc month - constant?

According what I read, the sideral month isn't constant (here)1, as well as the synodic month that isn't constant (here)2. Now, as far as I understood, because the sideral month isn't constant ...
1
vote
1answer
71 views

How many degrees does the sidereal month orbit?

It's written everywhere that anomalistic month orbits 360 degrees completely, then how many degrees does the sidereal month orbit? Here is written that the sidereal month orbits 360 degrees too, ...
2
votes
2answers
672 views

Is it possible to explain the difference between synodic month and sidereal month by degrees?

Is it possible to explain the difference between synodic and sidereal month by degrees - in the following way? Just recently I learnt about these two types of months, and I want to see if I can ...