START 1 NOAA 17 DEB

0.024% collision chance on 2025-01-07 22:01:59z

CDM information

Conjunction Data Message description

START 1 is risking orbital collision with NOAA 17 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Jan. 7, 2025, 10:59 p.m., with a collision probability of 0.024%. The closest distance at TCA is estimated to be 168.0 meters.

Key information

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

CDM image for a payload

TCA: 2025-01-07 22:59:39z

CDM ID: 908971638

Miss distance: 168.0 (m)

Collision probability: 0.0002354136 (~0.024%)

Objects comparison

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

START 1 Name NOAA 17 DEB
22561 Norad ID 48616
PAYLOAD Type DEBRIS
LEO Orbit SSO
75.76° Inclination 98.7°
LARGE Size SMALL
CIS Country US
March 25, 1993 Launch date June 24, 2002
Full details

Live tracking

Real-time ground track for START 1 and NOAA 17 DEB.


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