2023-03-29, 01:06 PM
(This post was last modified: 2023-03-29, 01:51 PM by bigmasterdrago.)
That's the way I'm always expecting it to work. I'm curious if you did the copy/paste of osculating elements (Horizons) or did as Phil suggested and do the MPC NEA Today download? I did the Horizons thing and it was near spot on best I could tell. However in the case of your March 25 image, I got the osculating elements for your image date the next day but for your date/time. Hope that makes sense.
Dennis, I did notice a difference in the rock's trail length in this image. It appears longer than the image you posted earlier. This one seems to have the asteroids trail passing over the LEDA galaxy.
Looking closely at the image and overlay of the ST track, I'm guessing the total displacement error, considering time and offset, is ~2.5 arc minutes. Does that look about right? For me, the error is much smaller when using the osculating elements gathered from Horizons. At most, a few arc seconds.
Dennis, I did notice a difference in the rock's trail length in this image. It appears longer than the image you posted earlier. This one seems to have the asteroids trail passing over the LEDA galaxy.
Looking closely at the image and overlay of the ST track, I'm guessing the total displacement error, considering time and offset, is ~2.5 arc minutes. Does that look about right? For me, the error is much smaller when using the osculating elements gathered from Horizons. At most, a few arc seconds.