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v2.1.0

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@loggger101 loggger101 released this 26 Sep 19:03
· 22 commits to main since this release
v2.1.0
dc25a1a

Earlier version of the analysis for Edwards (2026), "Constraints on the Origin of the Asteroid Belt's Compositional Gradient from Debiased Taxonomic Data", which cites v2.6.3. v2.2.0 and v2.3.0 differ only in their inputs, the catalog releases data-2026-09-27 and data-2026-09-29c, and in the mass-by-zone figure's legend; every table and fraction is identical (see its notes).

New input. v2.1.0 analyses the AsteroidCatalog release data-2026-09-26b (1,567,859 bodies, data contract 1.5.0). belt-gradient fetch downloads it by tag and checks the sha256 its manifest lists. The method is unchanged from v2.0.0.

What the new release changes, checked body by body against data-2026-09-26:

  • 185 more main-belt bodies (1,442,600 → 1,442,785), all without a classification: they join the assumed-albedo tier (1,200,582 → 1,200,767). No body left the main belt.

  • The 161,659 classified main-belt bodies are the same set, with identical classes, orbits, absolute magnitudes and albedos.

  • Data contract 1.5.0 corrects the class densities of Xe, Xk and Xc types, which moves the masses of 129 classified bodies.

Results. Every zone fraction, crossover, orbit test, bootstrap interval and table is identical to v2.0.0. In summary.json, four mass shares move by at most 0.0004: Ceres 0.3853 → 0.3851, Pallas 0.0843 → 0.0842, the measured share of classified mass 0.9401 → 0.9397, and the inner belt's S share of all classified mass 0.891 → 0.8908. Three figures change slightly: completeness (the faint-end curves), mass by zone (the X-type bars), and circularity (the legend's n).

Headline results (unchanged, results/summary.json):

  • S/C crossover: 2.84 AU raw, 2.41–2.47 AU once families are collapsed and the sample is limited by size. The 10–90% transition is 1.4–1.5 AU wide, wider than the belt.

  • Inner-belt C/(S+C): 0.25 raw, 0.39–0.53 corrected.

  • Orbit test: one of eight KS tests passes Bonferroni, outer-belt sin i (p = 0.0060). With the one-step family extension none does (smallest p = 0.011), so it is read as family halos.

No API changes.

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