Technical Attachment.pdf


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SPACEX NON-GEOSTATIONARY SATELLITE SYSTEM
ATTACHMENT A
TECHNICAL INFORMATION TO SUPPLEMENT SCHEDULE S
A.1

SCOPE AND PURPOSE
This attachment contains the information required under Part 25 of the Commission’s

rules that cannot be fully captured by the associated Schedule S.
A.2

OVERALL DESCRIPTION
The SpaceX non-geostationary orbit (“NGSO”) satellite system (the “SpaceX System”)

consists of a constellation of 4,425 satellites (plus in-orbit spares)1 operating in 83 orbital planes
(at altitudes ranging from 1,110 km to 1,325 km), as well as associated ground control facilities,
gateway earth stations and end user earth stations. The overall constellation will be configured
as follows:
SPACEX SYSTEM CONSTELLATION
Parameter
Orbital Planes
Satellites per Plane
Altitude
Inclination

Initial
Deployment
(1,600 satellites)
32

Final Deployment
(2,825 satellites)
32

8

5

6

50

50

50

75

75

1,150 km

1,110 km

1,130 km

1,275 km

1,325 km

53º

53.8º

74º

81º

70º

This constellation will enable SpaceX to provide full and continuous global coverage, utilizing
a minimum elevation angle of 40 degrees.
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SpaceX will provision to launch up to two extra spacecraft per plane to replenish the constellation in the event
of on-orbit failures. If a case arises wherein a spare is not immediately needed, it will remain dormant in the
same orbit and will perform station-keeping and debris avoidance maneuvers along with the rest of the active
constellation. Because these spare satellites will not operate their communications payloads, and the TT&C
facilities communicate in turn with a fixed number of satellites at all times, the addition of spare satellites will
not affect the interference analyses for TT&C operations presented in this application.

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