Break-up record
Cosmos 2251
On 10 February 2009 the retired Russian satellite Cosmos 2251 collided with the working communications satellite Iridium 33, the first accidental collision between two intact satellites. 1,101 of its fragments are now entered in the Orbital Register.
1,101
Fragments on record
10 Feb 2009
Break-up
15 Dec 2015
Half down by
30 Aug 2026
Latest to come down
608
Still in orbit
Fragments coming down, month by month
Bars: per month · line: share of the cloud downFragments re-entered that monthShare of all 1,101 on record
The fragments
Every fragment on record
Each fragment has its own register entry and permanent number. Fragment pages are kept out of search results; this page carries them.
Entry no.ObjectCountryLaunchedEnded (UTC)In orbitHow it ended
2025-0503COSMOS 2251 DEBNORAD 34033 · 1993-036HU · FragmentRussia—4 Mar 2025—Re-entered2025-0504COSMOS 2251 DEBNORAD 35592 · 1993-036AMK · FragmentRussia—4 Mar 2025—Re-entered2025-0562COSMOS 2251 DEBNORAD 40798 · 1993-036BWB · FragmentRussia—13 Mar 2025—Re-entered2025-0583COSMOS 2251 DEBNORAD 37997 · 1993-036BQY · FragmentRussia—17 Mar 2025—Re-entered2025-0630COSMOS 2251 DEBNORAD 35675 · 1993-036APS · FragmentRussia—25 Mar 2025—Re-entered2025-0631COSMOS 2251 DEBNORAD 36071 · 1993-036AYJ · FragmentRussia—25 Mar 2025—Re-entered2025-0663COSMOS 2251 DEBNORAD 34948 · 1993-036AEB · FragmentRussia—29 Mar 2025—Re-entered2025-0664COSMOS 2251 DEBNORAD 37120 · 1993-036BGS · FragmentRussia—29 Mar 2025—Re-entered2025-0682COSMOS 2251 DEBNORAD 35709 · 1993-036AQE · FragmentRussia—31 Mar 2025—Re-entered2025-0695COSMOS 2251 DEBNORAD 34914 · 1993-036ADK · FragmentRussia—2 Apr 2025—Re-entered2025-0710COSMOS 2251 DEBNORAD 37093 · 1993-036BFP · FragmentRussia—4 Apr 2025—Re-entered2025-0714COSMOS 2251 DEBNORAD 45039 · 1993-036BWS · FragmentRussia—4 Apr 2025—Re-entered2025-0736COSMOS 2251 DEBNORAD 39582 · 1993-036BUM · FragmentRussia—7 Apr 2025—Re-entered2025-0743COSMOS 2251 DEBNORAD 34126 · 1993-036KX · FragmentRussia—8 Apr 2025—Re-entered2025-0777COSMOS 2251 DEBNORAD 33930 · 1993-036EK · FragmentRussia—12 Apr 2025—Re-entered2025-0778COSMOS 2251 DEBNORAD 36002 · 1993-036AWU · FragmentRussia—12 Apr 2025—Re-entered2025-0802COSMOS 2251 DEBNORAD 33759 · 1993-036G · FragmentRussia—15 Apr 2025—Re-entered2025-0830COSMOS 2251 DEBNORAD 36456 · 1993-036BBF · FragmentRussia—19 Apr 2025—Re-entered2025-0853COSMOS 2251 DEBNORAD 34428 · 1993-036RV · FragmentRussia—22 Apr 2025—Re-entered2025-0872COSMOS 2251 DEBNORAD 35974 · 1993-036AVQ · FragmentRussia—25 Apr 2025—Re-entered
1,101 entries · page 51 of 56
Other break-ups