IRIDIUM 33 DEB CZ-4 DEB

0.061% collision chance on 2025-07-19 22:07:36z

CDM information

Conjunction Data Message description

IRIDIUM 33 DEB is risking orbital collision with CZ-4 DEB. The time of closest approach (TCA) between the two objects is calculated to be at July 19, 2025, 10:36 p.m., with a collision probability of 0.061%. The closest distance at TCA is estimated to be 94.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object IRIDIUM 33 DEB in its detailed page.

Key information

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

TCA: 2025-07-19 22:36:17z

CDM ID: 1086850872

Miss distance: 94.0 (m)

Collision probability: 0.0006146787 (~0.061%)

Last Updated: 1 month, 2 weeks ago

Objects comparison

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

IRIDIUM 33 DEB	Name	CZ-4 DEB
34487	Norad ID	26323
DEBRIS	Type	DEBRIS
LEO	Orbit	SSO
86.34°	Inclination	98.47°
SMALL	Size	SMALL
US	Country	PRC
Sept. 14, 1997	Launch date	Oct. 14, 1999
	Full details

Live tracking

Real-time ground track for IRIDIUM 33 DEB and CZ-4 DEB.

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