DELTA 1 DEB CZ-4C R/B

0.152% collision chance on 2025-12-07 00:12:40z

CDM information

Conjunction Data Message description

DELTA 1 DEB is risking orbital collision with CZ-4C R/B. The time of closest approach (TCA) between the two objects is calculated to be at Dec. 7, 2025, 12:40 a.m., with a collision probability of 0.152%. The closest distance at TCA is estimated to be 443.0 meters.

Key information

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

CDM image for a debris

TCA: 2025-12-07 00:40:45z

CDM ID: 1254094863

Miss distance: 443.0 (m)

Collision probability: 0.001516403 (~0.152%)

Objects comparison

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

DELTA 1 DEB Name CZ-4C R/B
42560 Norad ID 64754
DEBRIS Type ROCKET BODY
SSO Orbit LEO
97.86° Inclination 10.99°
SMALL Size LARGE
US Country PRC
July 23, 1972 Launch date July 3, 2025
Full details

Live tracking

Real-time ground track for DELTA 1 DEB and CZ-4C R/B.


Newsletter sign-up

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