We are monitoring a very high risk conjunction between two large defunct objects in LEO. Multiple data points show miss distance <25m and Pc between 1% and 20%. Combined mass of both objects is ~2,800kg.
Object 1: 19826
Object 2: 36123
TCA: Oct 16 00:56UTC
Event altitude: 991km
Predicted close approach Thu/Fri night between a retired Parus navigation satellite (Kosmos-2004), launched in 1989, and the ChangZheng-4C Y4 third stage rocket launched in 2009.
Update: Another swing and a miss. Our long national nightmare is not yet over.