NOAA 1 THORAD DELTA 1 DEB

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

CDM information

Conjunction Data Message description

NOAA 1 is risking orbital collision with THORAD DELTA 1 DEB. 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 NOAA 1 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: 1259643901

Miss distance: 813.0 (m)

Collision probability: 0.0002270075 (~0.023%)

Last Updated: 1 week, 2 days ago

Objects comparison

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

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

Live tracking

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

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