ESSA 4 (TOS-B) COSMOS 397 DEB

0.023% collision chance on 2025-02-02 22:02:45z

CDM information

Conjunction Data Message description

ESSA 4 (TOS-B) is risking orbital collision with COSMOS 397 DEB. The time of closest approach (TCA) between the two objects is calculated to be at Feb. 2, 2025, 10:45 p.m., with a collision probability of 0.023%. The closest distance at TCA is estimated to be 220.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object ESSA 4 (TOS-B) in its detailed page.

Key information

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

TCA: 2025-02-02 22:45:04z

CDM ID: 932398166

Miss distance: 220.0 (m)

Collision probability: 0.0002277459 (~0.023%)

Last Updated: 3 months ago

Objects comparison

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

ESSA 4 (TOS-B)	Name	COSMOS 397 DEB
2657	Norad ID	5187
PAYLOAD	Type	DEBRIS
SSO	Orbit	LEO
102.08°	Inclination	65.65°
MEDIUM	Size	SMALL
US	Country	CIS
Jan. 26, 1967	Launch date	Feb. 25, 1971
	Full details

Live tracking

Real-time ground track for ESSA 4 (TOS-B) and COSMOS 397 DEB.

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