IRIDIUM 920 COSMOS 397 DEB

0.858% collision chance on 2025-12-02 07:12:26z

CDM information

Conjunction Data Message description

IRIDIUM 920 is risking orbital collision with COSMOS 397 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Dec. 2, 2025, 7:26 a.m., with a collision probability of 0.858%. The closest distance at TCA is estimated to be 43.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object IRIDIUM 920 in its detailed page.

Key information

Parameters and calculations for this potential in-orbit collision event.

TCA: 2025-12-02 07:26:49z

CDM ID: 1250181811

Miss distance: 43.0 (m)

Collision probability: 0.008581815 (~0.858%)

Last Updated: 1 week, 4 days ago

Objects comparison

A comparison of the two objects interested by this conjunction data message.

IRIDIUM 920	Name	COSMOS 397 DEB
24871	Norad ID	6843
PAYLOAD	Type	DEBRIS
LEO	Orbit	LEO
86.4°	Inclination	65.66°
LARGE	Size	SMALL
US	Country	CIS
July 9, 1997	Launch date	Feb. 25, 1971
	Full details

Live tracking

Real-time ground track for IRIDIUM 920 and COSMOS 397 DEB.

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