Ok. I think you are right they are of 2 different dates. I pasted this fromt he 3/31/10 10Q and it shows the 2 numbers as of different dates. Not sure this pasted right but it's on page 5 of the 10Q. http://www.otcmarkets.com/edgar/GetFilingHtml?FilingID=7398932
"TerreStar Notes including contingent interest derivative and accrued interest, thereon (net of discount as of June 30, 2010 of $48,294 and as of December 31, 2009 of $48,528) 857,059 791,930"