START 1 DEB IRIDIUM 33 DEB

0.011% collision chance on 2025-06-30 18:06:39z

CDM information

Conjunction Data Message description

START 1 DEB is risking orbital collision with IRIDIUM 33 DEB. The time of closest approach (TCA) between the two objects is calculated to be at June 30, 2025, 6:39 p.m., with a collision probability of 0.011%. The closest distance at TCA is estimated to be 187.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object START 1 DEB in its detailed page.

Key information

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

TCA: 2025-06-30 18:39:51z

CDM ID: 1069017234

Miss distance: 187.0 (m)

Collision probability: 0.0001097749 (~0.011%)

Last Updated: 1 week ago

Objects comparison

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

START 1 DEB	Name	IRIDIUM 33 DEB
27752	Norad ID	39777
DEBRIS	Type	DEBRIS
LEO	Orbit	LEO
75.76°	Inclination	85.96°
SMALL	Size	SMALL
CIS	Country	US
March 25, 1993	Launch date	Sept. 14, 1997
	Full details

Live tracking

Real-time ground track for START 1 DEB and IRIDIUM 33 DEB.

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