Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.



Kepler, Maestlin and the orbit of Mars

Recommended Posts

In the first version of his MC Kepler presents the periods of the planets with values of very high precision. This is well before he has access to Tycho’s data. It is most likely that he gets this information from his praeceptor Michael Maestlin.

It is presented by Maestlin in his Epitome on p343 in the 1588 version.

In this book he does not derive these values of the periods, just reports them.

They are derivable from known information of sidereal and synodic cycles. For example in the case of Mars : 42 sidereal cycles and 37 synodic cycles in 79 years. Or from the time between oppositions, i.e. for Mars 780 days.

Copernicus was not aware, as far as I know, of the values that Maestlin and Kepler later know, in such detail as presented in their books.

I would like to know when these values were first generated and by whom.

Share this post

Link to post
Share on other sites

Wow, first post! Sometimes I am amused, other times frustrated but your post warrants serious interrogation. 
Please... we’ll educated SGLrs provide some answers, as I am following this like a hawk.


Edited by Marvin Jenkins
Noticed time delay in replies.

Share this post

Link to post
Share on other sites

While I'm interested in astronomy history, I'm also a little bemused as to why someone with such a specific and highly detailed question should be posting it here and not in more academic circles. But perhaps you have already done so?  Please, this is not a criticism but it may have something in common with Marvin Jenkins' reaction. I guess it would help to know where you're coming from.


Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.