Update Sentry impact risk: 2,185 objects

README.md

@@ -60,18 +60,18 @@ This dataset is suitable for **tabular classification, tabular regression** task
 
 | Column | Type | Description | Sample | Null % |
 |--------|------|-------------|--------|--------|
-| `designation` | str | Asteroid designation: either a permanent number (e.g. '29075') for numbered asteroids, or a provisional MPC designation (e.g. '2024 YR4') for unnumbered ones | 29075 | 0.0% |
-| `n_potential_impacts` | int64 | Count of distinct impact geometries (virtual impactors) identified by Sentry's orbital sampling; a larger number reflects broader orbital uncertainty, not necessarily higher probability | 1 | 0.0% |
 | `absolute_magnitude` | float64 | Absolute magnitude H; proxy for size: H=18 ~ 1 km, H=22 ~ 140 m, H=25 ~ 40 m; actual diameter depends on unknown albedo; null for some objects | 17.94 | 0.0% |
-| `torino_scale` | float64 | Maximum Torino Scale integer (0-10) across all impact solutions; public communication metric combining probability and kinetic energy: 0 = no hazard, 1 = routine monitoring, 4-7 = threatening, 10 = certain global catastrophe; historically only a few objects have briefly exceeded 1 | 0.0 | 0.1% |
+| `designation` | str | Asteroid designation: either a permanent number (e.g. '29075') for numbered asteroids, or a provisional MPC designation (e.g. '2024 YR4') for unnumbered ones | 29075 | 0.0% |
+| `impact_probability` | float64 | Total cumulative probability of at least one Earth impact across all monitored years, summed over all virtual impactor solutions; typically 10^-7 to 10^-1; the vast majority of entries are below 1 in 10,000 | 0.000377 | 0.0% |
+| `diameter_km` | float64 | Estimated diameter in km derived from absolute magnitude assuming a geometric albedo of 0.154; null if H is unavailable; range in this table is typically 0.01-10 km | 1.3 | 0.0% |
 | `palermo_scale_max` | float64 | Maximum Palermo Scale over any single impact solution in the monitored time window; less conservative than the cumulative value; useful for identifying the single most hazardous potential impact date | -0.93 | 0.0% |
+| `last_observation` | datetime64[us] | UTC date of the most recent astrometric observation incorporated into the orbit solution; more recent observations typically reduce impact probability | 2025-04-28 00:00:00 | 0.0% |
+| `full_name` | str | Full formatted name combining number (if assigned) and provisional designation or name (e.g. '29075 (1950 DA)', '2024 YR4') | 29075 (1950 DA) | 0.0% |
+| `torino_scale` | float64 | Maximum Torino Scale integer (0-10) across all impact solutions; public communication metric combining probability and kinetic energy: 0 = no hazard, 1 = routine monitoring, 4-7 = threatening, 10 = certain global catastrophe; historically only a few objects have briefly exceeded 1 | 0.0 | 0.1% |
+| `v_infinity_kms` | float64 | Hyperbolic excess speed (v_inf) at Earth encounter in km/s; combined with Earth's gravity well this yields the actual impact speed (typically 11-30 km/s); determines kinetic energy: higher v_inf means more destructive impact for the same mass | 14.1 | 0.2% |
 | `palermo_scale_cum` | float64 | Cumulative Palermo Scale: logarithm of the ratio of cumulative impact probability to the background impact frequency for objects of equivalent energy; PS=0 equals background risk; PS>-2 merits attention by planetary defense community; dataset is sorted by this column descending | -0.93 | 0.0% |
 | `last_observation_jd` | float64 | Same as last_observation expressed as a Julian Date (TDB timescale) | 2460793.5 | 0.0% |
-| `v_infinity_kms` | float64 | Hyperbolic excess speed (v_inf) at Earth encounter in km/s; combined with Earth's gravity well this yields the actual impact speed (typically 11-30 km/s); determines kinetic energy: higher v_inf means more destructive impact for the same mass | 14.1 | 0.2% |
-| `full_name` | str | Full formatted name combining number (if assigned) and provisional designation or name (e.g. '29075 (1950 DA)', '2024 YR4') | 29075 (1950 DA) | 0.0% |
-| `impact_probability` | float64 | Total cumulative probability of at least one Earth impact across all monitored years, summed over all virtual impactor solutions; typically 10^-7 to 10^-1; the vast majority of entries are below 1 in 10,000 | 0.000377 | 0.0% |
-| `last_observation` | datetime64[us] | UTC date of the most recent astrometric observation incorporated into the orbit solution; more recent observations typically reduce impact probability | 2025-04-28 00:00:00 | 0.0% |
-| `diameter_km` | float64 | Estimated diameter in km derived from absolute magnitude assuming a geometric albedo of 0.154; null if H is unavailable; range in this table is typically 0.01-10 km | 1.3 | 0.0% |
+| `n_potential_impacts` | int64 | Count of distinct impact geometries (virtual impactors) identified by Sentry's orbital sampling; a larger number reflects broader orbital uncertainty, not necessarily higher probability | 1 | 0.0% |
 | `year_range_min` | Int64 | Earliest calendar year in which an impact solution exists; the first year where the object's uncertain orbit intersects Earth's orbit | 2880 | 0.0% |
 | `year_range_max` | Int64 | Latest calendar year in which an impact solution exists; Sentry monitors orbits forward up to ~100 years | 2880 | 0.0% |
 

data/sentry_impact_risk.parquet

@@ -1,3 +1,3 @@
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