IRIDIUM 33 DEB DELTA 1 R/B

0.024% collision chance on 2025-11-15 04:11:11z

CDM information

Conjunction Data Message description

IRIDIUM 33 DEB is risking orbital collision with DELTA 1 R/B. The time of closest approach (TCA) between the two objects is calculated to be at Nov. 15, 2025, 4:11 a.m., with a collision probability of 0.024%. The closest distance at TCA is estimated to be 94.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object IRIDIUM 33 DEB in its detailed page.

Key information

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

TCA: 2025-11-15 04:11:09z

CDM ID: 1229634475

Miss distance: 94.0 (m)

Collision probability: 0.0002436627 (~0.024%)

Last Updated: 1 month ago

Objects comparison

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

IRIDIUM 33 DEB	Name	DELTA 1 R/B
35806	Norad ID	1983
DEBRIS	Type	ROCKET BODY
LEO	Orbit	SSO
86.34°	Inclination	98.03°
SMALL	Size	MEDIUM
US	Country	US
Sept. 14, 1997	Launch date	Feb. 3, 1966
	Full details

Live tracking

Real-time ground track for IRIDIUM 33 DEB and DELTA 1 R/B.

Return to all CDMs

Newsletter sign-up

Weekly statistics, charts and insights to help you stay on top of the space industry.