IRIDIUM 73 TIROS 3

0.015% collision chance on 2025-08-16 09:08:09z

CDM information

Conjunction Data Message description

IRIDIUM 73 is risking orbital collision with TIROS 3. The time of closest approach (TCA) between the two objects is calculated to be at Aug. 16, 2025, 9:09 a.m., with a collision probability of 0.015%. The closest distance at TCA is estimated to be 633.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object IRIDIUM 73 in its detailed page.

Key information

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

TCA: 2025-08-16 09:09:57z

CDM ID: 1117561887

Miss distance: 633.0 (m)

Collision probability: 0.0001459655 (~0.015%)

Last Updated: 3 weeks, 3 days ago

Objects comparison

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

IRIDIUM 73	Name	TIROS 3
25344	Norad ID	162
PAYLOAD	Type	PAYLOAD
LEO	Orbit	LEO
86.45°	Inclination	47.9°
LARGE	Size	MEDIUM
US	Country	US
May 17, 1998	Launch date	July 12, 1961
	Full details

Live tracking

Real-time ground track for IRIDIUM 73 and TIROS 3.

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