Reply To: Thermal Desktop Orbital Elements Reference Frame

[Alex]

Hi Doug,

1. It sounds like you are saying the equatorial right ascension (15 degrees in my TD screenshot) is converted by Thermal Desktop to an ecliptic longitude to calculate the solar declination parameter. Is that correct? May you please provide the formula or matrices for this conversion?
2. In the BetaAngle_deg function from my previous post, I have a parameter sin(orbRAAN_deg - L_s). Should the L_s variable that appears here be the equatorial right ascension of the sun (15 deg) or should it also be converted to the ecliptic longitude form?

Thank you for all your help so far! I am trying to validate my own model with Thermal Desktop, so accuracy is important.