I found out what was causing the jagged trail lines.
I had to set my location to geocentric. Duh!
I assume the rest of the wrong precision is that I using co-ordinates with an epoch of Feb 14th

On 2/20/2018 9:23 AM, bob davis wrote:

On 2/20/2018 9:14 AM, bob davis wrote:

I have updated to the most recent orbital parameters from:
https://www.projectpluto.com/temp/spacex.htm#elements2

when I view where the roadster is it seems to be off about 16 minutes of arc compared to this image.
http://spaceweathergallery.com/indiv_upload.php?upload_id=142753&PHPSESSID=m2hturcfrhq6umb52lev806073

Also the trail is jagged.
Anybody know where the precision error is?