I just want to ask if someone does possess the formula linking the local hour to the right ascension of the ascending node (RAAN).

I will try to explain myself: I know that I want my satellite to be on a sun-synchronous orbit 10h30-22h30 with 10h30 corresponding to my local time of ascending node (LTAN) as my entrance parameter; and I want to know the RAAN because in every software simulating an orbit the entrance parameter is the RAAN.

So how can I pass from the LTAN to the RAAN?

  • $\begingroup$ I presume with RAAN you mean Right Ascension of the Ascending Node, and with LTAN you mean Longitude of the Ascending Node (which I only know as LAN)? In that case, both are exactly the same - its just a different name for the same thing/number. $\endgroup$ – Polygnome Jul 19 '17 at 10:56
  • 2
    $\begingroup$ In this context, I think LTAN means Local Time of the Ascending Node. $\endgroup$ – Christoph Nov 22 '18 at 13:48

I guess you mean something like this: https://www.mathworks.com/matlabcentral/fileexchange/39085-mean-local-time-of-the-ascending-node

  • $\begingroup$ Link-only answers are not appreciated. Can you summarize the information at the link? $\endgroup$ – Organic Marble Mar 19 '19 at 18:28
  • $\begingroup$ I though a link-only answer to a two years old question was better than no answer, but of course, I will explain when I have the time and I will appreciate the removal of the downvote. $\endgroup$ – astrojuanlu Mar 19 '19 at 18:41

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.