Update on IGS 1B (10 June 2012)
Using the latest amateur orbital elements for the object and Alan Pickup's SatEvo software with the current 10.7 cm solar flux, re-entry is currently estimated to occur between mid-July and early August 2012.
SatTrackCam Leiden (Cospar 4353) is an amateur satellite tracking station located at Leiden, the Netherlands. Using a camera it makes accurate positional measurements on satellites of interest, mostly classified satellites -i.e. spy satellites- in order to determine their orbits.