COSMOS 921 ISIS 1 DEB

0.012% collision chance on 2025-09-14 23:09:55z

CDM information

Conjunction Data Message description

COSMOS 921 is risking orbital collision with ISIS 1 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Sept. 14, 2025, 11:55 p.m., with a collision probability of 0.012%. The closest distance at TCA is estimated to be 277.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object COSMOS 921 in its detailed page.

Key information

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

TCA: 2025-09-14 23:55:51z

CDM ID: 1153182034

Miss distance: 277.0 (m)

Collision probability: 0.0001184478 (~0.012%)

Last Updated: 1 month, 2 weeks ago

Objects comparison

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

COSMOS 921	Name	ISIS 1 DEB
10095	Norad ID	31999
PAYLOAD	Type	DEBRIS
LEO	Orbit	HEO
75.83°	Inclination	88.39°
LARGE	Size	SMALL
CIS	Country	CA
June 24, 1977	Launch date	Jan. 30, 1969
	Full details

Live tracking

Real-time ground track for COSMOS 921 and ISIS 1 DEB.

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