← Eggert Gudmundsson Projects

Ground-station visibility · Reykjavik, Iceland

NTN Constellations

How sparse are the connect windows for direct-to-device satellite constellations, viewed from 64.1458°N, -21.9425°E, 37 m? SGP4-propagated from fresh Celestrak TLEs, regenerated daily by cron.

Sateliot

Spanish NB-IoT direct-to-device operator. 4 satellites flying in near-identical orbital planes (same 2024 launch).

11.3% connected ≥10° · 29.2 passes/day · 4 satellites · About Sateliot →

AST SpaceMobile

BlueWalker/BlueBird direct-to-cell constellation.

6.43% connected ≥10° · 25.0 passes/day · 10 satellites · About AST SpaceMobile →

Lynk Global

Lynk Tower direct-to-cell constellation.

9.13% connected ≥10° · 24.0 passes/day · 4 satellites · About Lynk Global →

Last generated: 2026-10-07 03:17 UTC