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Preparing the latest launch data.

T-Minus Zero

Primary launch schedule data: The Space Devs - Launch Library 2

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SBIRS GEO-4 (USA 273) (NORAD 41937) | T-Minus Zero

Satellite

SBIRS GEO-4 (USA 273)

2017-004ANORAD 41937United States (US)Ops: +

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Catalog

OwnerUnited States (US)

Object typePAY

Launch siteAFETR

Launch designator2017-004

Period1436.09 min

Inclination2.05°

Altitude35,776 km → 35,797 km

SATCAT updated2026-06-13T00:11:02.266+00:00

Groups

activegeo

Orbit (latest)

Epoch2026-06-13T06:24:27.514368+00:00

Inclination2.2354°

RAAN43.1647°

Eccentricity0.0001911

Mean motion1.002714 rev/day

Sourcegp

Fetched2026-06-13T18:11:21.936+00:00