DELTA 1 DEB TRANSIT 4A

0.041% collision chance on 2025-11-17 00:11:07z

CDM information

Conjunction Data Message description

DELTA 1 DEB is risking orbital collision with TRANSIT 4A. The time of closest approach (TCA) between the two objects is calculated to be at Nov. 17, 2025, 12:07 a.m., with a collision probability of 0.041%. The closest distance at TCA is estimated to be 191.0 meters.

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

Key information

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

TCA: 2025-11-17 00:07:16z

CDM ID: 1229557405

Miss distance: 191.0 (m)

Collision probability: 0.0004080806 (~0.041%)

Last Updated: 4 weeks, 1 day ago

Objects comparison

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

DELTA 1 DEB	Name	TRANSIT 4A
12190	Norad ID	116
DEBRIS	Type	PAYLOAD
SSO	Orbit	LEO
99.07°	Inclination	66.81°
SMALL	Size	MEDIUM
US	Country	US
March 5, 1978	Launch date	June 29, 1961
	Full details

Live tracking

Real-time ground track for DELTA 1 DEB and TRANSIT 4A.

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