7 May
2011
7 May
'11
4:56 p.m.
According to various sources, the ISS orbit was raised 1 km Thursday. This will result in a "slippage" of the old Kep's predictions of about 20 seconds per day. So make certain your Keps are up to date. The Celestrak updates used by most tracking programs look good.
73s,
Alan WA4SCA