Registry/53.9°W

Atlantic / Latin America · West

53.9°W

Inmarsat is the registry operator, with 1 satellite on station and no FCC row.

On stationUnrecorded in ClarkeOperating (no FCC market-access row)

TLE as of 2026-09-23. FCC SSAL stale (2026-04-30). UCS 2023-04-07. Position disagreement.

Occupancy

On station
1 satellite

On station. Inmarsat.

Space-Track TLE (primary) + UCS Satellite Database (fallback) · Sep 23, 2026
Registry operator
Inmarsat
Country
United Kingdom
Purpose
Communications
Status
On station
Position source
1 TLE / 0 UCS fallback
Remaining life
Life-extended / past UCS design life · ~-15.8y (n=1)
Coverage proxy
Latin America / Atlantic · GDP 1.05 · pop 1.15
Source operator strings (UCS)
  • Inmarsat: INMARSAT, Ltd.

Co-located satellites (1)

SatelliteLaunched
INMARSAT 3 F5Dispute
TLE occupancy
1998

Rights

License / FCC
foreign operating

No FCC row

FCC SSAL + UCS occupancy · Apr 30, 2026

Recorded rights (FCC)

Recorded public layers only. FCC SSAL when present; otherwise inferred administration/operator. ITU SNS is not ingested. The Unrecorded chip is not a filled filing row.

  1. National administration
    M
    United Kingdom

    Inferred from operator country (United Kingdom); not an ITU notifying administration record.

    UCS operator country · Apr 30, 2026
    inferred
  2. Operator license
    M
    Inmarsat

    UCS operator Inmarsat. No FCC market-access row at this longitude (expected for many non-US administrations and US government birds).

    UCS Satellite Database · Apr 30, 2026
    inferred

Freshness

TLE epoch
2026-09-23

FCC SSAL 2026-04-30 is stale. UCS vintage 2023-04-07.

FCC Approved Space Station List · Apr 30, 2026
Congestion 33 · Low · 1 co-located
Clarke congestion v0 ← TLE-primary occupancy longitudes · Sep 23, 2026

Labeled model. Not a live market price.

Implied fair value

Fair value (v0)
$55M

low · $28M–$83M CI · labeled model

Clarke valuation v0 (model) · Sep 23, 2026

No trade tape. Seeded model-path sparklines are Experimental, not default Terminal.

Arc desirabilityLatin America / Atlantic×1.20
Coverage (GDP/pop)Latin America / Atlantic · GDP 1.05 · pop 1.15×1.03
Occupancy1 co-located satellite (TLE-primary ±0.4°)×1.12
Remaining lifeLife-extended / past UCS design life · ~-15.8y (n=1)×0.88
OperatorTier-1 operator×1.30
SpectrumNo band data (UCS-derived)×1.00
ScarcityCongestion score 33×1.17
License / BIUOperating (no FCC market-access row)×1.00
Driver breakdown is Pro

Full driver breakdown, compare, export+, and API sit behind a Terminal seat.

Valuation v0 is a model-based implied fair-value range from public registry data, not a live market price, appraisal, or offer to transact. Methodology · Valuation v0 · Data trust

Nearest comps

Positions outside this slot's ±0.4° occupancy window. Not transaction comps.

SlotΔSatsCong.Fair value
53°W0.9°125$64M
55°W1.1°225$65M
55.3°W1.4°330$96M
52.5°W1.4°230n/c
52.4°W1.5°230n/c
55.5°W1.6°225$86M
ExperimentalSeeded v0 model path (not trades)Not default Terminal

This block is quarantined from the default Slot Terminal. It is a labeled stub or simulation, not recorded public occupancy or FCC data, and it is not a market. ITU SNS is not ingested.

Model backfill. Not observed trades, not a price index.

$55M
2026-09-23 · synthesized · model backfill, not trades

Free seats see a 7-day backfill. Pro unlocks 30-day persisted model path.

ExperimentalUnrecorded layers (ITU SNS not ingested; sub-lease stub)Not default Terminal

This block is quarantined from the default Slot Terminal. It is a labeled stub or simulation, not recorded public occupancy or FCC data, and it is not a market. ITU SNS is not ingested.

Quarantined stubs. Not filled panels. ITU SNS is not ingested in this product. These rows reserve the rights-chain shape; they are not live filings or named lessees.

  1. ITU filing
    S
    Not recorded in Clarke

    ITU SNS is not ingested. This flag is not a network name, not brought-into-use evidence, and not a filled filing row. Quarantined stub. A filled ITU network panel would look like a deed; this row is not one.

    Clarke stub (ITU SNS not ingested) · Apr 30, 2026 · ITU filing: not recorded in Clarke
    stub
  2. Sub-lease / capacity lease
    S
    No public sub-lease registry

    Quarantined stub. There is no public feed of transponder or payload sub-leases. This layer is reserved for operator-disclosed or future marketplace filings and is not a named lessee.

    Clarke stub · Apr 30, 2026 · Unknown. Not mocked as a named lessee
    stub
ExperimentalSimulated capacity book (not a market)Not default Terminal

This block is quarantined from the default Slot Terminal. It is a labeled stub or simulation, not recorded public occupancy or FCC data, and it is not a market. ITU SNS is not ingested.

Simulated capacity book

SIMULATED capacity book — not live bids, offers, or trades. Derived from valuation v0 and congestion so the strip can be read; it is not a marketplace.

36 MHz transponder-equivalent · USD (simulated) · spread 11.0% · Sep 23, 2026
Bids
$52M
83 MHz
$51M
55 MHz
$50M
28 MHz
Asks
$58M
66 MHz
$60M
50 MHz
$61M
33 MHz

Provenance · occupancy TLE-primary Sep 23, 2026 · UCS catalog Apr 7, 2023 · FCC SSAL Apr 30, 2026 · valuation v0 Sep 23, 2026 · snapshots seeded 2026-09-15 (model path, not trades)

Default Terminal is occupancy + FCC + freshness + labeled model. ITU SNS is not ingested (Unrecorded in Clarke). Simulated book, ITU/sub-lease stubs, and seeded sparklines are Experimental. Not financial advice.