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New question. I see that scenario files accept RPOS and RVEL for position and velocity relative to the body the ship is orbiting. Is there a way to set the absolute position and velocity (origin at solar system barycenter, J2000 ecliptic)?

Thanks. I converted Argument of Periapsis to Longitude of Periapsis and Mean Anomaly to Mean Longitude. It looks much better now. There is a "close" approach with Earth on August 11, which is consistent with what this article says. It only passes within 12,970,000 km, though. That doesn't seem...

Hi. I'm trying to make an Orbiter scenario for ISEE-3/ICE which will be making a pass by Earth in August of this year. I dug up some TLEs from here and did the conversion. The orbit looks about right. Aphelion and Perihelion are correct and there is an intersection with Earth in August, but...

My question is about the Head Up Displays we are all too familiar with. I'd like to know how the optics work in real life HUDs. I understand that the image you see is a reflection from an LCD or CRT. The cool part about real HUDs, though, thats not obvious from 2D pictures is that the image...