a public registry of the geostationary beltLast updatedData as of 2026-11-01. FCC workbook 2026-09-27.

Registry > North America > 66.8°W | Compare

slot_66-8w.htm

66.8°WSES, US DoD

SES is the registry operator, with 3 satellites on station and an FCC license (2 rows).

Occupancy ±0.4°: SES 2/3 · US DoD 1/3.

3on station
2FCC rows
2UCS vs TLE
2026-11-01latest TLE
On stationUnrecorded in ClarkeBrought into use (in-orbit + FCC record)

TLE epoch 2026-11-01. FCC 2026-09-27. UCS 2023-04-07. Position disagreement.

Who is on station
On station
3 satellites

±0.4° TLE-primary. Majority SES (2/3).

Data as of 2026-11-01 · Space-Track TLE (primary) + UCS Satellite Database (fallback)
Registry operator
SES
Window majority
SES
Operator mix
SES 2/3 · US DoD 1/3
Country
—
Purpose
Communications
Status
On station
Position source
3 TLE / 0 UCS fallback
Remaining life
Mid-life · ~8.6y remaining (n=2)
Coverage proxy
North America · GDP 1.60 · pop 1.10
Bands
Ka
Source operator strings (UCS)
  • SES: SES S.A.. UCS SES S.A. and FCC SES / New Skies legal entities. New Skies is the SES brand.
  • US DoD: US Air Force. UCS US military strings, including MUOS (DoD/US Navy). Not a single program office. Unknown US agency stays unknown. Federal Government (Reserved) is an FCC reservation placeholder, not an operator.

Co-located satellites (3)

SatelliteLaunched
SES-17Dispute
TLE occupancy
2021
SES-10
TLE occupancy
2017
AEHF-4 (Advanced Extremely High Frequency satellite-4, USA 288)Dispute
TLE occupancy
2018

Positions are from Space-Track TLE inside a 0.4° window. A TLE longitude is where the satellite is, not an FCC or ITU assignment.

FCC filings near 66.8°W

Rights

License / FCC
brought into use

2 FCC rows

FCC SSAL + UCS occupancy · Sep 27, 2026

Recorded rights (FCC)

Recorded public layers only. FCC SSAL when present; otherwise inferred administration/operator. ITU filings are not in this product. ITU Space Explorer is the current ITU source.

  1. National administration
    V
    Luxembourg

    FCC lists administration as Luxembourg.

    FCC Approved Space Station List · Sep 27, 2026
    recorded
  2. Operator license
    V
    SES

    2 FCC authorizations · S3043, S2950 · SES (SES-17 S.a r.l.; New Skies Satellites B.V.).

    FCC Approved Space Station List · Sep 27, 2026
    recorded

FCC / license signals (2)

SatelliteCall sign
SES-17S3043
SES-10S2950

FCC Approved Space Station List · Sep 27, 2026 · class V

Freshness
TLE epoch
2026-11-01

TLE epoch is within 45 days. FCC 2026-09-27 · UCS 2023-04-07.

FCC Approved Space Station List · Sep 27, 2026
Congestion 43 · Moderate · 3 co-located
Clarke congestion v0 ← TLE-primary occupancy longitudes · Nov 1, 2026
Labeled model
Labeled modelImplied value, comps, and model pathNot occupancy or rights

Modeled dollars from valuation v0. Not a live market price, not a trade, and not an FCC or ITU record.

Implied fair value

Fair value (v0)
$149M

high · $116M–$182M CI · labeled model

Clarke valuation v0 (model) · Nov 1, 2026

MHand estimate / curated opinion: $200M+. Secondary to the model range. Not a competing headline, not a trade, not the fair-value figure.

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

Arc desirabilityNorth America×1.60
Coverage (GDP/pop)North America · GDP 1.60 · pop 1.10×1.11
Occupancy3 co-located satellites (TLE-primary ±0.4°)×1.36
Remaining lifeMid-life · ~8.6y remaining (n=2)×1.03
OperatorTier-1 operator×1.30
SpectrumKa-band×1.15
ScarcityCongestion score 43×1.22
License / BIUBrought into use (in-orbit + FCC record) · US market access×1.10
Driver breakdown is Pro

Driver breakdown, compare, and export sit on a paid seat. Registry access is free.

PricingSign in

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
65.5°W1.3°238n/c
65.2°W1.6°343$121M
65°W1.8°240$109M
69.9°W3.1°333$164M
70°W3.2°338$168M
63°W3.8°130$101M

Model path

Seeded v0 path. Not observed trades, not a price index.

$149M
2026-11-01 · synthesized · model backfill, not trades

This chart shows 7 days of the model path. Pricing

ExperimentalUnrecorded layers (ITU filings are not in this product; 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 filings are not in this product.

Quarantined stubs. ITU filings are not in this product. ITU Space Explorer is the current ITU source. These rows reserve the rights-chain shape; they are not live filings or named lessees.

  1. ITU filing
    S
    Not recorded in Clarke

    ITU filings are not in this product. ITU Space Explorer is the current ITU source. SNS Online shut down in January 2025. Quarantined stub. A filled ITU network panel would look like a deed; this row is not one.

    Clarke stub (ITU filings are not in this product) · Sep 27, 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 · Sep 27, 2026 · Unknown. Not mocked as a named lessee
    stub
sources.txt
  • Occupancy: TLE-primary Nov 1, 2026. UCS catalog Apr 7, 2023.
  • FCC SSAL Sep 27, 2026. Valuation v0 Nov 1, 2026 · snapshots seeded 2026-09-15 (model path, not trades).
  • ITU filings: not collected (Unrecorded in Clarke). Source: ITU Space Explorer.

Cite this

Clarke slot record, 66.8°W (66-8w). https://www.clarkebelt.finance/orbital/66-8w. Data vintage: UCS file vintage 2023-04-07, FCC as-of 2026-09-27, TLE epoch 2026-11-01. Accessed the day you open this page.

Default Terminal is occupancy, recorded FCC, and freshness. Implied value is behind Labeled model. The simulated capacity book is not on this page. Not financial advice. Report a correction