Pith Number

pith:TICXFLRU

pith:2026:TICXFLRUZYQEYU56AZ3H6JESZM

not attested not anchored not stored refs pending

A Validated Low-to-Intermediate Mass Planetary Interior Structure Model and New Mass-Radius Relations

Bennett Neil Skinner, Ralph E. Pudritz, Ryan Cloutier

A new planetary interior model reproduces solar system radii to within 1 percent and supplies updated mass-radius curves for exoplanets of different compositions.

arxiv:2604.15304 v2 · 2026-04-16 · astro-ph.EP

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\usepackage{pith}
\pithnumber{TICXFLRUZYQEYU56AZ3H6JESZM}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

This model replicates Earth's radius and moment of inertia coefficient to within 0.2%, Mars and the Moon's to within 0.5%, and Mercury, Venus, and Europa's to within 1% or 3σ.

C2weakest assumption

The mineralogy and equations of state calibrated on solar-system bodies and lab data remain accurate when extrapolated to arbitrary compositions, pressures, and temperatures encountered in exoplanets of different formation histories.

C3one line summary

A validated interior model with advanced physics produces updated mass-radius relations for low-to-intermediate mass planets that differ from prior relations especially at high and low stellar irradiation.

Cited by

1 paper in Pith

Formation and evolution pathways of planets. I. Comparison between theory and observations

Receipt and verification

First computed	2026-05-29T01:04:37.448799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a0572ae34ce204c53be06767f2492cb27baf488d032de48d6a63642bac8995e

Aliases

arxiv: 2604.15304 · arxiv_version: 2604.15304v2 · doi: 10.48550/arxiv.2604.15304 · pith_short_12: TICXFLRUZYQE · pith_short_16: TICXFLRUZYQEYU56 · pith_short_8: TICXFLRU

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TICXFLRUZYQEYU56AZ3H6JESZM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 9a0572ae34ce204c53be06767f2492cb27baf488d032de48d6a63642bac8995e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e809419159f55b472533665156de1436e6a9f0c113da4005e9515ac4f423da7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2026-04-16T17:59:02Z",
    "title_canon_sha256": "230215e85cc651c2c7afbfe3dc88efc3a8197edfa61e20e3182cd0af5fe4e060"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.15304",
    "kind": "arxiv",
    "version": 2
  }
}