[gozur88]

>How do you put a satellite in orbit without anyone knowing about it? You hide it with another satellite!

Heh. There was a Russian launch recently where a piece of "debris" started moving under its own power after stage separation.

http://www.iflscience.com/space/mysterious-satellite-sparks-...

[arprocter]

https://en.wikipedia.org/wiki/Kosmos_2499

[lsaferite]

That article has no date attached. I find that infuriating.

[grzm]

Not unusual for aggregation sites like that, unfortunately. The FT article it in turn does cite has a dateline of November 17, 2014.

https://www.ft.com/content/cdd0bdb6-6c27-11e4-990f-00144feab...

The year is also reflected in the naming of the object, by the way: Object 2014-28E.