Mass and Radius Data for 48 Solar System Objects

A compiled dataset of 48 Solar System bodies includes mass, mean radius, and bulk density measurements, spanning from small asteroids to giant planets. Mario Menichella created this data to support the 2026 paper analyzing the mass-radius relation and the onset of hydrostatic equilibrium. The dataset is accompanied by Python scripts that reproduce all figures and statistical analyses from the study.

Use Cases

• Analyze the mass-radius relation across 48 objects to identify the transition point to hydrostatic equilibrium using mass and radius columns.
• Model bulk density as a function of object size using the provided density, mass, and radius data.
• Reproduce statistical analyses of density dispersion reported in the paper using the accompanying Python scripts.
• Validate theoretical models of planetary structure by comparing predictions against the empirical mass and radius measurements.

Strengths

• Dataset contains 48 distinct Solar System objects.
• Includes three core physical properties: mass, mean radius, and bulk density.
• Accompanied by complete Python scripts to reproduce all paper figures and analyses.
• Data is identical to that used in the published statistical analysis.

Limitations

• Small sample size of 48 objects limits statistical power for subgroup analysis.
• Dataset scope is limited to the Solar System, excluding exoplanetary data.
• Temporal coverage and update frequency for the underlying measurements are not specified.

Provenance

Source

Harvard Dataverse, authored by Mario Menichella.

Collection Method

Compiled from existing measurements of Solar System bodies, as described in the associated research paper.

Time Range

null

Freshness

Data was last updated in April 2026.

Geography

Solar System.