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Minor Planet (52768) 1998 OR2 Close approach
#5
The files that I see the elements for 1998 OR2 are unusual and MPCORB. If I understand it correctly, they have different epoch dates. Unusual is 2017 Sept 4, MPCORB is 2020 May 31. I seem to think that the ephemeris "start at" date should be near or at the epoch date for best position calculation. So it makes since to start at May 31, 2020 and run the ephemeris back to April 29th. Do I have this right? Or just run the ephemeris from Sept 4, 2017 using the elements in the unusual file. A rather long list.
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RE: Minor Planet (52768) 1998 OR2 Close approach - by bigmasterdrago - 2020-03-25, 03:42 PM

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