Resources
Tools, sites and references for satellite connectivity
A curated collection of tools, websites, reports and videos to help you navigate the LEO satellite ecosystem.
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3 resources found
Jonathan McDowell's Starlink statistics: launched, in orbit, working, reentered
The independent ledger of the Starlink constellation, updated several times a day by astronomer Jonathan McDowell: 12,962 satellites launched, 11,154 in orbit, 11,139 working and 1,808 reentered or failed as of 21 September 2026, broken down by generation and by launch. The citation-grade source for constellation size.
OpenSN: open-source emulator for large LEO satellite networks
OpenSN, from Beihang University, emulates LEO satellite networks with one container per node so that real routing software runs on every satellite and gateway. It scales across machines and builds mega-constellations 5 to 10 times faster than StarryNet. Published in IEEE TPDS, August 2025.
Mega-constellations in three minutes: O3b mPOWER, OneWeb and Starlink
A concise academic explainer (November 2023) of non-geostationary constellations, comparing SES's O3b mPOWER in medium Earth orbit with OneWeb and Starlink in low Earth orbit, made alongside a Frontiers paper on connecting space missions through NGSO constellations. Good for the orbit and orbital-plane basics.