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LESSON 05 OF 6

Orbit targets: SSO, ISS, GTO

Beginner ~9 min Slide deck Free

When you see satellites clustered at certain altitudes and inclinations on Orbital Radar, you're seeing the fingerprints of mission requirements. The orbit geometry is never arbitrary.

When you see satellites clustered at certain altitudes and inclinations on Orbital Radar, you're seeing the fingerprints of mission requirements. The orbit geometry is never arbitrary.

What this lesson covers

GTO: The Highway to GEO

Getting a satellite to GEO requires a two-stage orbit sequence. No rocket delivers directly to GEO altitude.

MEO: Why GPS Lives There

Medium Earth Orbit (2,000–35,786 km) is less populated than LEO but perfectly suited for navigation constellations.

Key facts

💡GTO appears in tracking as a highly elliptical orbit (eccentricity ~0.73). Period is ~10.5 hours. Objects in GTO are easy to spot — nothing operational stays there long.
💡A GPS satellite's period is precisely half a sidereal day — its ground track repeats daily, enabling predictable geometry for receivers.
Orbit targets are chosen for mission physics — not aesthetics.

Next time you see a cluster of satellites at an unusual inclination or altitude, ask: what mission requirement puts them there? The answer is always in the physics.

All lessons in Launch → Orbit
01Speed, not height~9 min02Inclination from launch site~9 min03Injection vs parking vs final~10 min04Plane changes~9 min05Orbit targets: SSO, ISS, GTO~9 min06Why early-orbit is messy~9 min
← Plane changesAll 6 LessonsWhy early-orbit is messy →
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