hi everyone.
i'm working on doing a rendez-vous with ISS using Dan's DeltaGlider IV, and i need some help with OrbitMFD: as you surely know, in order to choose an encounter-point, we have to know the target's altitude when its angular position is = to our periapsis' longitude. I usually check "LPe" (Longitude of periapsis), and, when LPe matches with target's TrL, i take note of target's altitude. my question is: if i want to know my APOAPSIS' longitude, what do i have to do? MFD doesn't display it, so i thought that if apoapsis and periapsis are always opposite to the centre, then LAp (longitude of apoapsis) must be LAp = LPe - 180°, but i don't know if it's true.
can anybody help me?
i'm working on doing a rendez-vous with ISS using Dan's DeltaGlider IV, and i need some help with OrbitMFD: as you surely know, in order to choose an encounter-point, we have to know the target's altitude when its angular position is = to our periapsis' longitude. I usually check "LPe" (Longitude of periapsis), and, when LPe matches with target's TrL, i take note of target's altitude. my question is: if i want to know my APOAPSIS' longitude, what do i have to do? MFD doesn't display it, so i thought that if apoapsis and periapsis are always opposite to the centre, then LAp (longitude of apoapsis) must be LAp = LPe - 180°, but i don't know if it's true.
can anybody help me?