DELTA 1 R/B(1) CZ-4 DEB

0.023% collision chance on 2025-12-05 11:12:50z

CDM information

Conjunction Data Message description

DELTA 1 R/B(1) is risking orbital collision with CZ-4 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Dec. 5, 2025, 11:50 a.m., with a collision probability of 0.023%. The closest distance at TCA is estimated to be 572.0 meters.

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

Key information

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

TCA: 2025-12-05 11:50:04z

CDM ID: 1253021090

Miss distance: 572.0 (m)

Collision probability: 0.0002336445 (~0.023%)

Last Updated: 1 week, 3 days ago

Objects comparison

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

DELTA 1 R/B(1)	Name	CZ-4 DEB
10793	Norad ID	28075
ROCKET BODY	Type	DEBRIS
LEO	Orbit	SSO
28.23°	Inclination	98.65°
LARGE	Size	SMALL
US	Country	PRC
April 7, 1978	Launch date	Oct. 14, 1999
	Full details

Live tracking

Real-time ground track for DELTA 1 R/B(1) and CZ-4 DEB.

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