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For Engineers & Mission Designers

Engineering Tools Built for Space Professionals

Satellite tracking, orbital mechanics, link budgets, and mission planning — all in one browser-based platform. No licenses, no installs, no barriers.

Start Free — No Credit Card RequiredOpen Satellite Tracker

Why Space Engineers Need Better Tools

Legacy engineering software is expensive, siloed, and stuck in the desktop era.

Expensive Legacy Tools

STK licenses cost $10K+ per seat. MATLAB add-ons, proprietary orbit propagators, and specialized RF tools add up quickly for small teams and startups.

No Integrated Platform

Engineers juggle between orbit propagators, link budget spreadsheets, thermal tools, and mission planning documents with no shared data layer.

Outdated Calculators

Many available online calculators use simplified models and haven't been updated in years. You need tools you can trust for real mission design.

Your Space Engineering Workbench

Professional-grade tools accessible from any browser, on any device.

Satellite Tracker

Live 3D tracking of 10,000+ satellites with TLE data, orbit visualization, and pass predictions.

Constellation Designer

Design and optimize satellite constellations with coverage analysis, inter-satellite links, and ground station placement.

Orbital Calculator

Delta-v budgets, transfer orbit calculations, Hohmann transfers, and bi-elliptic maneuver planning.

Link Budget Tool

Complete RF link budget analysis with atmospheric losses, antenna gain patterns, and margin calculations.

Thermal Calculator

Spacecraft thermal analysis for orbit-averaged temperatures, eclipse durations, and radiator sizing.

Mission Planner

End-to-end mission planning from launch vehicle selection to concept-of-operations timeline generation.

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Frequently Asked Questions

Are the engineering tools free to use?

Yes. Core engineering tools including the satellite tracker, orbital calculator, and link budget tool are available on the free plan. Advanced features like constellation optimization and mission planning are available on paid plans.

How accurate are the orbital calculations?

SpaceNexus uses SGP4/SDP4 propagation models for satellite tracking and validated Keplerian mechanics for orbital calculations. Results are suitable for preliminary mission design and trade studies.

Can I export results for use in other tools?

Yes. All calculators support CSV and JSON export. Constellation designs can be exported in standard formats compatible with STK, GMAT, and other analysis tools.

Does SpaceNexus replace STK or GMAT?

SpaceNexus complements rather than replaces high-fidelity tools. Use SpaceNexus for rapid trade studies, preliminary design, and real-time monitoring, then move to STK or GMAT for detailed mission analysis.

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Join thousands of space engineers who use SpaceNexus for satellite tracking, orbit design, and mission planning.

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