DELTA 1 DEB THOR ABLESTAR DEB

0.015% collision chance on 2025-12-16 22:12:46z

CDM information

Conjunction Data Message description

DELTA 1 DEB is risking orbital collision with THOR ABLESTAR DEB. The time of closest approach (TCA) between the two objects is calculated to be at Dec. 16, 2025, 10:46 p.m., with a collision probability of 0.015%. The closest distance at TCA is estimated to be 795.0 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: 2025-12-16 22:46:10z

CDM ID: 1264819000

Miss distance: 795.0 (m)

Collision probability: 0.0001498875 (~0.015%)

Last Updated: 12 hours ago

Objects comparison

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

DELTA 1 DEB	Name	THOR ABLESTAR DEB
21363	Norad ID	561
DEBRIS	Type	DEBRIS
SSO	Orbit	LEO
99.74°	Inclination	67.76°
SMALL	Size	MEDIUM
US	Country	US
June 12, 1975	Launch date	June 29, 1961
	Full details

Live tracking

Real-time ground track for DELTA 1 DEB and THOR ABLESTAR DEB.

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