curprev20:1720:17, 15 January 2019 Swpbtalkcontribs 5,275 bytes−55 I'm sorry, but this introduces multiple inaccuracies. 1) It's called a "pass", never prefixed like that, 2) They aren't just orbital vehicles (think Voyagers), and 3) Availability isn't just determined by the horizon, but by slant attenuation/diffusion near the horizonundo