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
2025-1767COSMOS 2251 DEBNORAD 36064 · 1993-036AYB · FragmentRussia—20 Nov 2025—Re-entered2025-1773COSMOS 2251 DEBNORAD 35280 · 1993-036AJJ · FragmentRussia—23 Nov 2025—Re-entered2025-1775COSMOS 2251 DEBNORAD 38485 · 1993-036BTV · FragmentRussia—23 Nov 2025—Re-entered2025-1795COSMOS 2251 DEBNORAD 34989 · 1993-036AFM · FragmentRussia—28 Nov 2025—Re-entered2025-1801COSMOS 2251 DEBNORAD 37515 · 1993-036BMU · FragmentRussia—29 Nov 2025—Re-entered2025-1809COSMOS 2251 DEBNORAD 35037 · 1993-036AHA · FragmentRussia—1 Dec 2025—Re-entered2025-1824COSMOS 2251 DEBNORAD 34577 · 1993-036VP · FragmentRussia—4 Dec 2025—Re-entered2025-1860COSMOS 2251 DEBNORAD 35000 · 1993-036AFY · FragmentRussia—12 Dec 2025—Re-entered2025-1863COSMOS 2251 DEBNORAD 34453 · 1993-036SW · FragmentRussia—13 Dec 2025—Re-entered2025-1873COSMOS 2251 DEBNORAD 37978 · 1993-036BQD · FragmentRussia—15 Dec 2025—Re-entered2025-1892COSMOS 2251 DEBNORAD 34299 · 1993-036MV · FragmentRussia—23 Dec 2025—Re-enteredPendingCOSMOS 2251 DEBNORAD 34736 · 1993-036ZE · FragmentRussia—4 Jan 2026—Re-enteredPendingCOSMOS 2251 DEBNORAD 34907 · 1993-036ADC · FragmentRussia—7 Jan 2026—Re-enteredPendingCOSMOS 2251 DEBNORAD 35839 · 1993-036ATM · FragmentRussia—7 Jan 2026—Re-enteredPendingCOSMOS 2251 DEBNORAD 34400 · 1993-036QR · FragmentRussia—21 Jan 2026—Re-enteredPendingCOSMOS 2251 DEBNORAD 34429 · 1993-036RW · FragmentRussia—27 Jan 2026—Re-enteredPendingCOSMOS 2251 DEBNORAD 36442 · 1993-036BAR · FragmentRussia—1 Feb 2026—Re-enteredPendingCOSMOS 2251 DEBNORAD 35605 · 1993-036AMY · FragmentRussia—14 Feb 2026—Re-enteredPendingCOSMOS 2251 DEBNORAD 33815 · 1993-036BG · FragmentRussia—24 Feb 2026—Re-enteredPendingCOSMOS 2251 DEBNORAD 35432 · 1993-036AKA · FragmentRussia—15 Mar 2026—Re-entered
1,101 entries · page 54 of 56
Other break-ups