COSMOS 1503 CZ-4 DEB

0.222% collision chance on 2025-11-12 20:11:49z

CDM information

Conjunction Data Message description

COSMOS 1503 is risking orbital collision with CZ-4 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Nov. 12, 2025, 8:49 p.m., with a collision probability of 0.222%. The closest distance at TCA is estimated to be 84.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object COSMOS 1503 in its detailed page.

Key information

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

TCA: 2025-11-12 20:49:54z

CDM ID: 1226267161

Miss distance: 84.0 (m)

Collision probability: 0.002215958 (~0.222%)

Last Updated: 1 month ago

Objects comparison

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

COSMOS 1503	Name	CZ-4 DEB
14401	Norad ID	20894
PAYLOAD	Type	DEBRIS
LEO	Orbit	SSO
74.04°	Inclination	98.55°
LARGE	Size	SMALL
CIS	Country	PRC
Oct. 12, 1983	Launch date	Sept. 3, 1990
	Full details

Live tracking

Real-time ground track for COSMOS 1503 and CZ-4 DEB.

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