Update JPL SBDB: 1,568,317 small bodies
Browse files- README.md +3 -3
- data/small_bodies.parquet +2 -2
README.md
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@@ -63,7 +63,7 @@ This dataset is suitable for **tabular classification, tabular regression** task
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| `full_name` | str | Full designation including permanent number and name where assigned (e.g. '1 Ceres', '433 Eros', '2024 YR4'); provisional designations follow MPC format | 50P/Arend | 0.0% |
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| `body_type` | str | Body type code: 'an' = numbered asteroid, 'au' = unnumbered asteroid, 'cn' = numbered comet, 'cu' = unnumbered comet | cn | 0.0% |
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| `neo` | object | True if orbit comes within 1.3 AU of the Sun (Near-Earth Object); False otherwise; null for some comets | True | 0.2% |
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| `pha` | object | True if potentially hazardous: absolute magnitude H <= 22.0 (roughly >= 140 m diameter) AND Earth MOID <= 0.05 AU; False otherwise | False | 3.
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| `orbit_class` | str | Dynamical orbit class: MBA (Main Belt), APO (Apollo, a>=1 AU, q<1.017 AU), AMO (Amor, 1.017<q<1.3 AU), ATE (Aten, a<1 AU), IEO (Atira, Q<0.983 AU), TNO (trans-Neptunian), COM (comet), and others | JFc | 0.0% |
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| `eccentricity` | float64 | Orbital eccentricity: 0 = circular, <1 = elliptical (all bound asteroids), ~1 = parabolic, >1 = hyperbolic; main-belt asteroids typically 0.05-0.35 | 0.5306 | 0.0% |
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| `semi_major_axis_au` | float64 | Semi-major axis in AU: main belt 2.0-3.3, NEAs <2.0, TNOs >30, Jupiter Trojans ~5.2; null for some long-period comets with open orbits | 4.087 | 0.1% |
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## Quick stats
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- **1,
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- **42,
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- **2,550** potentially hazardous asteroids (PHAs)
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- **139,687** with measured diameters
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- **138,480** with measured albedos
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| `full_name` | str | Full designation including permanent number and name where assigned (e.g. '1 Ceres', '433 Eros', '2024 YR4'); provisional designations follow MPC format | 50P/Arend | 0.0% |
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| `body_type` | str | Body type code: 'an' = numbered asteroid, 'au' = unnumbered asteroid, 'cn' = numbered comet, 'cu' = unnumbered comet | cn | 0.0% |
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| `neo` | object | True if orbit comes within 1.3 AU of the Sun (Near-Earth Object); False otherwise; null for some comets | True | 0.2% |
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| `pha` | object | True if potentially hazardous: absolute magnitude H <= 22.0 (roughly >= 140 m diameter) AND Earth MOID <= 0.05 AU; False otherwise | False | 3.1% |
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| `orbit_class` | str | Dynamical orbit class: MBA (Main Belt), APO (Apollo, a>=1 AU, q<1.017 AU), AMO (Amor, 1.017<q<1.3 AU), ATE (Aten, a<1 AU), IEO (Atira, Q<0.983 AU), TNO (trans-Neptunian), COM (comet), and others | JFc | 0.0% |
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| `eccentricity` | float64 | Orbital eccentricity: 0 = circular, <1 = elliptical (all bound asteroids), ~1 = parabolic, >1 = hyperbolic; main-belt asteroids typically 0.05-0.35 | 0.5306 | 0.0% |
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| `semi_major_axis_au` | float64 | Semi-major axis in AU: main belt 2.0-3.3, NEAs <2.0, TNOs >30, Jupiter Trojans ~5.2; null for some long-period comets with open orbits | 4.087 | 0.1% |
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## Quick stats
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- **1,568,317** small bodies (1,564,241 asteroids, 4,076 comets)
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- **42,582** near-Earth objects (NEOs)
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- **2,550** potentially hazardous asteroids (PHAs)
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- **139,687** with measured diameters
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- **138,480** with measured albedos
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data/small_bodies.parquet
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size
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