SL-12 R/B(2) INMARSAT 2-F4

Collision chance on 2025-09-08 13:09:30z

CDM information

Conjunction Data Message description

SL-12 R/B(2) is risking orbital collision with INMARSAT 2-F4. The time of closest approach (TCA) between the two objects is calculated to be at Sept. 8, 2025, 1:30 p.m., with a collision probability TBA. The closest distance at TCA is estimated to be 1336.0 meters.

Note: this is the latest available calculation for this conjunction event. Access all the most updated CDMs for object SL-12 R/B(2) in its detailed page.

Key information

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

TCA: 2025-09-08 13:30:05z

CDM ID: 1143006974

Miss distance: 1336.0 (m)

Collision probability: TBA

Last Updated: 12 hours ago

Objects comparison

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

SL-12 R/B(2)	Name	INMARSAT 2-F4
22044	Norad ID	21940
ROCKET BODY	Type	PAYLOAD
OTHER	Orbit	OTHER
14.77°	Inclination	11.89°
LARGE	Size	LARGE
CIS	Country	IM
July 14, 1992	Launch date	April 15, 1992
	Full details

Live tracking

Real-time ground track for SL-12 R/B(2) and INMARSAT 2-F4.

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