Methone / Factbook

Factbook · Methone

Methone at a glance

A one-card profile in the style of a national factbook. Every number links to its source or is labeled as a model assumption.

  • As of Oct 24, 2026
  • Sources 3

Methone

Saturn XXXII · S/2004 S 1

Introduction

Type
Small inner moon of Saturn.Source: [1] Wikipedia
Discovery
Discovered: June 1, 2004, Cassini Imaging Team.Source: [2] NASA Science

Physical

Size
Size: Mean radius ≈ 1.6 km; Shape: Egg-shaped triaxial ellipsoid.Source: [2] NASA Science, [1] Wikipedia
Mass
Density: ≈ 0.31 g/cm³ — among the lowest known.Source: [1] Wikipedia
Rotation
Not measured in our sources.
Surface composition
Not measured in detail in our sources.
Moons
None reported in our sources.

Orbit & access

Orbit
Mean distance: ≈ 194,700 km from Saturn; Orbital period: ≈ 24 hours; Resonance: 14:15 with Mimas.Source: [3] NASA JPL Solar System Dynamics, [2] NASA Science, [1] Wikipedia
Accessibility (Δv / travel time)
Model assumptionAbout 13.8 km/s of ideal Δv from low Earth orbit (7.29 km/s to depart + 6.52 km/s to arrive), and about 6.1 years for an ideal transfer.Model calculation from our Space Resource Intelligence (SRI) sample report: ideal transfer to the parent planet, then capture into this moon's orbit; no gravity assists. Real trajectories differ.
Mission history
Closest Cassini flyby: May 20, 2012, ≈ 1,900 km.Source: [1] Wikipedia

Resources & economy

Believed resources
Model assumptionOur model looks at water / volatiles for propellant and life support. Usable fraction assumed at 0.1–0.3 of extracted material (bear to bull). Very low density suggests ice-rich, porous material, but ice fraction is not measured; SRI assumption.SRI sample-model assumption, not a measurement.
Economic outlook
Model assumptionScientific value now; any resource value is long-horizon option value. Our sample model gives an NPV of about −$2,158M (bear), −$1,037M (base) and $4,937M (bull).Model output from our SRI sample valuation model (launch, product value, transit, extraction and discount-rate inputs are scenario assumptions, not forecasts). Not investment advice.
Business uses
Information products, science partnerships, and a (very long-shot) in-space resource case. See the Business page. Open →

Want the research behind these numbers? See Science. Thinking about the money side? See Business.