COSMOS 1821 PEGASUS DEB

0.015% collision chance on 2025-09-02 21:09:40z

CDM information

Conjunction Data Message description

COSMOS 1821 is risking orbital collision with PEGASUS DEB. The time of closest approach (TCA) between the two objects is calculated to be at Sept. 2, 2025, 9:40 p.m., with a collision probability of 0.015%. The closest distance at TCA is estimated to be 826.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object COSMOS 1821 in its detailed page.

Key information

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

TCA: 2025-09-02 21:40:08z

CDM ID: 1136872426

Miss distance: 826.0 (m)

Collision probability: 0.0001510056 (~0.015%)

Last Updated: 1 week ago

Objects comparison

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

COSMOS 1821	Name	PEGASUS DEB
17525	Norad ID	40242
PAYLOAD	Type	DEBRIS
LEO	Orbit	LEO
82.92°	Inclination	81.88°
LARGE	Size	SMALL
CIS	Country	US
Feb. 18, 1987	Launch date	May 19, 1994
	Full details

Live tracking

Real-time ground track for COSMOS 1821 and PEGASUS DEB.

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