essential
likely
maybe
probably not
Front (prompt)
Landsat 9 — launch date, altitude, sensors?
Plain English (default view) — short, conversational, lightly seasoned with science
🔬 Scientific / formula (revealed on click) — markdown + $$…$$ ok
- 🚀 **Launch:** Sept 27, 2021 - 🛰️ **Orbit** - Altitude: **705 km** - Sun-synchronous, 10 AM equator crossing - 16-day repeat (8-day combined with Landsat 8) - 📷 **Sensors** (the "-2" matches Landsat-9) - **OLI-2** — Operational Land Imager: 9 bands, 30 m VSWIR, 15 m pan - **TIRS-2** — Thermal Infrared Sensor: 2 thermal bands at 100 m - 🎚️ **Radiometric:** 14-bit (vs 12-bit on L8, 8-bit on L5/7)
💡 Mnemonic / memory aid (shown on hover)
705 km, 2021. OLI-2 + TIRS-2 (the '-2' matches Landsat-9). With L8 flying opposite, combined revisit ≈ 8 days.
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