lightpotential
9th February 2013, 18:19
I have been following this for some time, and I can give you precise information from the JPL solutions for the latest 3 data sets. One is for May of last year, the others are for January and February of this year. There was a long delay in posting a new solution from May of last year to January of this year.
There is a very close comparison between the May 2012 and Jan 2013 solutions. But then 4 weeks later, just 2 days ago, the Feb solution is significantly different. They are as follows:
JPL Solution date: 2012-May-13 02:50:12
Closest Approach to the earth: 17627.15 miles from the surface of the earth.
Date: 15 Feb 2013, 22:30:13 Universal Time
JPL Solution date: 2013-Jan-10 01:50:17
Closest Approach to the earth: 16844.85 miles from the surface of the earth.
Date: 15 Feb 2013, 22:30:34 Universal Time
JPL Solution date: 2013-Feb-08 00:52:12
Closest Approach to the earth: 20587.61 miles from the surface of the earth.
Date: 15 Feb 2013, 16:42:56 Universal Time
Sincerely
Keith
There is a very close comparison between the May 2012 and Jan 2013 solutions. But then 4 weeks later, just 2 days ago, the Feb solution is significantly different. They are as follows:
JPL Solution date: 2012-May-13 02:50:12
Closest Approach to the earth: 17627.15 miles from the surface of the earth.
Date: 15 Feb 2013, 22:30:13 Universal Time
JPL Solution date: 2013-Jan-10 01:50:17
Closest Approach to the earth: 16844.85 miles from the surface of the earth.
Date: 15 Feb 2013, 22:30:34 Universal Time
JPL Solution date: 2013-Feb-08 00:52:12
Closest Approach to the earth: 20587.61 miles from the surface of the earth.
Date: 15 Feb 2013, 16:42:56 Universal Time
Sincerely
Keith