CZ-4 DEB CSTB 1

0.010% collision chance on 2025-09-28 18:09:25z

CDM information

Conjunction Data Message description

CZ-4 DEB is risking orbital collision with CSTB 1. The time of closest approach (TCA) between the two objects is calculated to be at Sept. 28, 2025, 6:25 p.m., with a collision probability of 0.010%. The closest distance at TCA is estimated to be 421.0 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: 2025-09-28 18:25:03z

CDM ID: 1170048616

Miss distance: 421.0 (m)

Collision probability: 0.0001004864 (~0.010%)

Last Updated: 3 weeks, 3 days ago

Objects comparison

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

CZ-4 DEB	Name	CSTB 1
35327	Norad ID	31122
DEBRIS	Type	PAYLOAD
SSO	Orbit	SSO
98.47°	Inclination	98.4°
SMALL	Size	SMALL
PRC	Country	US
Oct. 14, 1999	Launch date	April 17, 2007
	Full details

Live tracking

Real-time ground track for CZ-4 DEB and CSTB 1.

Return to all CDMs

Newsletter sign-up

Weekly statistics, charts and insights to help you stay on top of the space industry.