THORAD DELTA 1 DEB NOAA 1

0.023% collision chance on 2025-12-09 21:12:44z

CDM information

Conjunction Data Message description

THORAD DELTA 1 DEB is risking orbital collision with NOAA 1. The time of closest approach (TCA) between the two objects is calculated to be at Dec. 9, 2025, 9:44 p.m., with a collision probability of 0.023%. The closest distance at TCA is estimated to be 813.0 meters.

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

Key information

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

TCA: 2025-12-09 21:44:07z

CDM ID: 1259645019

Miss distance: 813.0 (m)

Collision probability: 0.0002270075 (~0.023%)

Last Updated: 4 days, 12 hours ago

Objects comparison

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

THORAD DELTA 1 DEB	Name	NOAA 1
8161	Norad ID	4793
DEBRIS	Type	PAYLOAD
SSO	Orbit	SSO
101.23°	Inclination	101.37°
SMALL	Size	LARGE
US	Country	US
Nov. 15, 1974	Launch date	Dec. 11, 1970
	Full details

Live tracking

Real-time ground track for THORAD DELTA 1 DEB and NOAA 1.

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