COSMOS 1640 DELTA 1 DEB

0.203% collision chance on 2025-12-10 22:12:28z

CDM information

Conjunction Data Message description

COSMOS 1640 is risking orbital collision with DELTA 1 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Dec. 10, 2025, 10:28 p.m., with a collision probability of 0.203%. The closest distance at TCA is estimated to be 72.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object COSMOS 1640 in its detailed page.

Key information

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

TCA: 2025-12-10 22:28:20z

CDM ID: 1260563443

Miss distance: 72.0 (m)

Collision probability: 0.002031015 (~0.203%)

Last Updated: 3 days, 12 hours ago

Objects comparison

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

COSMOS 1640	Name	DELTA 1 DEB
15622	Norad ID	42654
PAYLOAD	Type	DEBRIS
LEO	Orbit	SSO
74.05°	Inclination	99.73°
MEDIUM	Size	SMALL
CIS	Country	US
March 21, 1985	Launch date	June 12, 1975
	Full details

Live tracking

Real-time ground track for COSMOS 1640 and DELTA 1 DEB.

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