🚀 Artemis Re-entry (Orion Capsule) — Infrasound at I57US
| Propagation Path · G2S 2026-04-11 00:00 UTC
Orion Re-entry — Legend
G2S: 2026-04-11 00:00 UTC
Trajectory (color = altitude)
■ High (~80 km)
■ Low (~12 km)
Mach Cone Arrivals
● Subsonic / Mach≈1 (<25 km)
● Low supersonic (25–35 km)
● Optimal zone (37–42 km)
● High supersonic (42–55 km)
● Very high (>55 km)
Markers
▼ Entry interface (~80 km)
⚡ Infrasound source (~38 km, Mach 4–5)
★ Mach 1 transition (~25 km)
▲ I57US (arrival 00:12:51 UTC)
- - - Thermospheric propagation path
Key Findings
| Observed arrival |
00:12:51 UTC Apr 11 |
| Travel time |
886 ± 8 s |
| Celerity |
0.232 km/s |
| Source time |
23:58:05 UTC Apr 10 |
| Source alt |
~38 km (Mach ~4–5) |
| Position |
32.18°N 117.86°W |
| Propagation |
Thermospheric |
| Duct |
No stratospheric |
Point-source runs (12–35 km) overshoot I57US.
Moving-source supersonic model required.