The European Space Administration is not paying attention. According to this article at the BBC:

A supposed asteroid, which it was feared was going to have a near-miss with Earth next week, has been identified as a spacecraft.

Professor Alan Fitzsimmons of Queen's University Astrophysics Research Centre told the BBC there is "no longer any need for concern".

"The 'asteroid' has been identified as the European spacecraft Rosetta," he said.

According to the Rosetta Home page, the spacecraft was launched March 2, 2004. How can you forget about a spacecraft after only 3 years?