Yet another TI-BASIC orbital calculator

[snotmaster]

KSP is either heaven or hell when it comes to formulas and calculations, and to avoid jumping between KSP and browser-based sites and tools I recently bought an old TI-84+. To avoid errors I minimized the need to enter lots of values, and I've ended up with a program that calculates velocities, Delta-V, orbital period, and time in darkness by entering just Apoapsis and Periapsis and selecting the planets/moons from a menu. The program is inelegant and unoptimized, and the "darkness time" formula is particularly bad. I might try to squeeze in more functions in the future. All values are in meters and seconds.

Link to Pastebin: https://pastebin.com/ZQmMfcfZ

Most of the work has been done in TokenIDE and Wabbitemu.

Problems: "Weird" characters often mess up copy-and-paste, so I've made some changes to the source file. Exponentials (ᴇ) have been turned into *10^(), and the variable store arrow (→) has been turned into ->. Minmus has been written as Min\mus to avoid it turning into Minμs. Using L2 as a label wasn't a good choice either.

My results differ slightly from some of the online calculators I've used. I have  no idea how to read the planet and moon Mass (and other) values straight from the game, so they're from Kerbal Space Program Wiki.