COSMOS 1638 COSMOS 2143 DEB

0.010% collision chance on 2025-11-27 17:11:40z

CDM information

Conjunction Data Message description

COSMOS 1638 is risking orbital collision with COSMOS 2143 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Nov. 27, 2025, 5:40 p.m., with a collision probability of 0.010%. The closest distance at TCA is estimated to be 857.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object COSMOS 1638 in its detailed page.

Key information

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

TCA: 2025-11-27 17:40:44z

CDM ID: 1241366166

Miss distance: 857.0 (m)

Collision probability: 0.0001023853 (~0.010%)

Last Updated: 2 weeks, 5 days ago

Objects comparison

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

COSMOS 1638	Name	COSMOS 2143 DEB
15620	Norad ID	57725
PAYLOAD	Type	DEBRIS
LEO	Orbit	LEO
74.06°	Inclination	82.81°
MEDIUM	Size	SMALL
CIS	Country	CIS
March 21, 1985	Launch date	May 16, 1991
	Full details

Live tracking

Real-time ground track for COSMOS 1638 and COSMOS 2143 DEB.

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