FENGYUN 1C DEB TIROS 4

0.037% collision chance on 2025-07-06 09:07:18z

CDM information

Conjunction Data Message description

FENGYUN 1C DEB is risking orbital collision with TIROS 4. The time of closest approach (TCA) between the two objects is calculated to be at July 6, 2025, 9:18 a.m., with a collision probability of 0.037%. The closest distance at TCA is estimated to be 530.0 meters.

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

Key information

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

TCA: 2025-07-06 09:18:38z

CDM ID: 1074025789

Miss distance: 530.0 (m)

Collision probability: 0.0003651702 (~0.037%)

Last Updated: 3 days, 12 hours ago

Objects comparison

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

FENGYUN 1C DEB	Name	TIROS 4
30078	Norad ID	226
DEBRIS	Type	PAYLOAD
SSO	Orbit	LEO
98.84°	Inclination	48.3°
MEDIUM	Size	MEDIUM
PRC	Country	US
May 10, 1999	Launch date	Feb. 8, 1962
	Full details

Live tracking

Real-time ground track for FENGYUN 1C DEB and TIROS 4.

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