Really close NEO 2012 DA14 Feb-15-2013
Posted 15 February 2013 - 07:32 PM
2012 DA14 is one of the asteroids.
Posted 15 February 2013 - 10:08 PM
The plots are all over the place. The Arlington position for 21:00 is 14 45 39, 82 37 17. NASA put's my Bloomington at 12 03 51, +42 32 and CDC puts it as 15 37 31, 84 11 51.
I only use JPL and MPC for the magnitude parameters of a minor body, unless Solex does not have the body in its data base. I just now checked and both JPL and MPC are using 2013 APR 18 as the epoch for Asteroid 2012 DA14. The updated solution date (this afternoon for JPL) only indicates when the accuracy of the elements was improved; it is not the epoch date. The epoch date is the moment for which it is assumed that everything disappears from the universe except the Sun and the particular minor body. Past and future perturbations are ignored. In the case of Asteroid 2012 DA14, that would result in substantial inaccuracies today, even if its coordinates are converted to topocentric (location on Earth’s surface).
Posted 17 February 2013 - 02:07 PM
Posted 18 June 2013 - 01:17 PM