CZ-4 DEB SL-8 DEB

0.016% collision chance on 2025-09-20 20:09:03z

CDM information

Conjunction Data Message description

CZ-4 DEB is risking orbital collision with SL-8 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Sept. 20, 2025, 8:03 p.m., with a collision probability of 0.016%. The closest distance at TCA is estimated to be 515.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object CZ-4 DEB in its detailed page.

Key information

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

TCA: 2025-09-20 20:03:09z

CDM ID: 1158870513

Miss distance: 515.0 (m)

Collision probability: 0.0001560361 (~0.016%)

Last Updated: 2 months, 3 weeks ago

Objects comparison

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

CZ-4 DEB	Name	SL-8 DEB
20904	Norad ID	12404
DEBRIS	Type	DEBRIS
SSO	Orbit	LEO
98.42°	Inclination	82.91°
SMALL	Size	SMALL
PRC	Country	CIS
Sept. 3, 1990	Launch date	March 17, 1980
	Full details

Live tracking

Real-time ground track for CZ-4 DEB and SL-8 DEB.

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