FENGYUN 1C DEB CZ-4 DEB

0.015% collision chance on 2025-10-05 22:10:20z

CDM information

Conjunction Data Message description

FENGYUN 1C DEB is risking orbital collision with CZ-4 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Oct. 5, 2025, 10:20 p.m., with a collision probability of 0.015%. The closest distance at TCA is estimated to be 348.0 meters.

Key information

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

CDM image for a debris

TCA: 2025-10-05 22:20:42z

CDM ID: 1178092837

Miss distance: 348.0 (m)

Collision probability: 0.0001465108 (~0.015%)

Objects comparison

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

FENGYUN 1C DEB Name CZ-4 DEB
29782 Norad ID 20855
DEBRIS Type DEBRIS
SSO Orbit SSO
99.1° Inclination 98.81°
SMALL Size LARGE
PRC Country PRC
May 10, 1999 Launch date Sept. 3, 1990
Full details

Live tracking

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


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