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**SPOT 1–3 orbit.** Memorize these numbers — they show up on short answer. - **Orbit type:** sun-synchronous, descending node crossing at **10:30 AM** local. - **Inclination:** ~98.7° (about 8° off polar). - **Altitude:** **832 km**. - **Revisit:** 26 days at nadir (much less with off-nadir pointing). - **Swath:** 60 km (single HRV) / **120 km combined** (both HRVs). - **Radiometric resolution:** 8-bit (256 grey levels).

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