2020-07-16, 01:08 PM
Thanks for the fix with the distance. It now can read hundredths of an A.U. I've also been experimenting with the MPC NEA and the MPC NEA Today asteroid downloads. I'm not sure what the difference is except that the Today looks to build a list with epochs now. I've also now found that as long as I stay within about a 12 hour window, the generated ephemerides are very close to those made at Horizons. This helps greatly with chart making. I still have been unable to copy and paste from a set of orbital elements created by Horizons so that I can plan several days ahead on a possible position fix of a close pass asteroid. i.e. 2016 DY30 on July 19 ~5UT. Maybe I'm still doing something wrong. I'm trying to copy and paste the text below.
2459049.708333333 = A.D. 2020-Jul-19 05:00:00.0000 TDB
EC= 5.110455240473311E-01 QR= 5.463558241559977E-01 IN= 7.681152919084764E-01
OM= 1.584502008168773E+02 W = 2.489835182502317E+02 Tp= 2459111.211830436718
N = 8.344366050810789E-01 MA= 3.086792306767361E+02 TA= 2.481067701965983E+02
A = 1.117396099282022E+00 AD= 1.688436374408047E+00 PR= 4.314288201259102E+02
2459049.708333333 = A.D. 2020-Jul-19 05:00:00.0000 TDB
EC= 5.110455240473311E-01 QR= 5.463558241559977E-01 IN= 7.681152919084764E-01
OM= 1.584502008168773E+02 W = 2.489835182502317E+02 Tp= 2459111.211830436718
N = 8.344366050810789E-01 MA= 3.086792306767361E+02 TA= 2.481067701965983E+02
A = 1.117396099282022E+00 AD= 1.688436374408047E+00 PR= 4.314288201259102E+02