COSMOS 1818 COOLANT IRIDIUM 4

0.049% collision chance on 2024-12-19 23:12:41z

CDM information

Conjunction Data Message description

COSMOS 1818 COOLANT is risking orbital collision with IRIDIUM 4. The time of closest approach (TCA) between the two objects is calculated to be at Dec. 19, 2024, 11:41 p.m., with a collision probability of 0.049%. The closest distance at TCA is estimated to be 922.0 meters.

Key information

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

CDM image for a debris

TCA: 2024-12-19 23:41:05z

CDM ID: 894558747

Miss distance: 922.0 (m)

Collision probability: 0.0004949293 (~0.049%)

Objects comparison

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

COSMOS 1818 COOLANT Name IRIDIUM 4
36935 Norad ID 24796
DEBRIS Type PAYLOAD
LEO Orbit LEO
65.01° Inclination 86.4°
SMALL Size LARGE
CIS Country US
Feb. 1, 1987 Launch date May 5, 1997
Full details

Live tracking

Real-time ground track for COSMOS 1818 COOLANT and IRIDIUM 4.


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