TIROS 3 IRIDIUM 73

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

CDM information

Conjunction Data Message description

TIROS 3 is risking orbital collision with IRIDIUM 73. 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 TIROS 3 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: 1117552868

Miss distance: 633.0 (m)

Collision probability: 0.0001459655 (~0.015%)

Last Updated: 3 weeks, 2 days ago

Objects comparison

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

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

Live tracking

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

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