[benweru]

Summary

• CesiumJS globe with a live SGP4 satellite, Nairobi marked, next-pass arc in yellow, picker for ISS / Landsat 9 / CUTE-1, and in-app credits.
• OpenStreetMap tiles so the app runs without a Cesium Ion token.
• Brief: docs/tasks/sprint15-web-cesium-globe.md

Test plan

• make test
• cd web && npm test
• cd web && npm run build
• cd web && npm run dev — globe, ISS track, next Nairobi pass, credits

72 passed, 4 skipped, 15 deselected in 3.72s

Test Files  8 passed (8)
     Tests  15 passed (15)

vite v6.4.4 building for production...
✓ built in 1.05s

Independent pass check (2026-10-19 ~22:40 UTC)

Live CelesTrak TLE ISS 25544, epoch 26292.43498098. Nairobi −1.286389°, 36.817223°, 1795 m, mask 10°:

	OrbitLog
Rise	2026-10-19T22:47:01Z
Max el	34.8° at 22:50:06Z
Set	2026-10-19T22:53:10Z

Heavens-Above PassSummary.aspx for those coords returned an application error (Laufzeitfehler) on 2026-10-19. N2YO’s custom observer location requires a login. Cross-check that remains: at computed rise, look-angle elevation is ~10° (unit test), and 0° mask is a longer window on the same geometry.

Machine: Windows 10, Node 22.11, CESIUM 1.125 via vite-plugin-cesium. First paint of npm run dev showed the globe and HUD in a few seconds on this laptop.

What's still missing

• v2 diagnosis / downlink queue (needs committed results/).
• A dated Heavens-Above or N2YO screenshot once those sites accept an anonymous Nairobi observer.