Formation flying

Anybody know what 3 satellites are up there flying in a triangular formation?

I saw three flare in Andromeda on Monday night just after 8pm. They were in a formation close to an equilateral triangle and all three flared at the same time. I have seen reference to older NOSS satellites flying in trips but what else is up there?

NOSS are the only ones I know. I never saw them flare though, I'm assuming we're talking iridium type flare here. Some amateur websites do, or at least did, publish the observed elements for the triplets so you might be able to check if this is what you saw.

Wasn't there a thread here a long time ago about something like this, there was talk of surveillance satellites....

Thought that myself Dave but couldn't find it. Most of the new NOSS are in twos and older ones are non functional.

phoenix wrote: Thought that myself Dave but couldn't find it. Most of the new NOSS are in twos and older ones are non functional.

Well the whole iridium constellation is non functional as well

Archive threads:
www.irishastronomy.org/index.php?option=...5059&Itemid=40#65061
www.irishastronomy.org/index.php?option=...8100&Itemid=40#68105

According to the links only 2 sets of NOSS satellites are still in formation: 1986-014 D, E & H and 1990-50 C, D & E.

Heavens Above puts these nowhere near me at the time I saw the trips.