{ "event": { "id": "2026-12-22-ursids", "title": "小熊座流星雨（Ursids）峰值", "type": "meteor_shower", "peak_utc": "2026-12-22T03:00:00Z", "window_min": 1080, "params": { "peak_zhr": 10, "sigma_min": 240, "moon_penalty": 0.85 }, "notes": "冬至附近的小流星雨，北半球更友好。" }, "series": [ { "t": "2026-12-21T09:00:00+00:00", "value": 0.00034055502784008406, "label": "Active" }, { "t": "2026-12-21T09:10:00+00:00", "value": 0.0004104313442855747, "label": "Active" }, { "t": "2026-12-21T09:20:00+00:00", "value": 0.000493787123013094, "label": "Active" }, { "t": "2026-12-21T09:30:00+00:00", "value": 0.0005930414061659753, "label": "Active" }, { "t": "2026-12-21T09:40:00+00:00", "value": 0.0007110109514526852, "label": "Active" }, { "t": "2026-12-21T09:50:00+00:00", "value": 0.0008509686871786343, "label": "Active" }, { "t": "2026-12-21T10:00:00+00:00", "value": 0.0010167095104387071, "label": "Active" }, { "t": "2026-12-21T10:10:00+00:00", "value": 0.001212624137771638, "label": "Active" }, { "t": 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