Geographos
(1620) Geographos · 1951 RA · discovered at Palomar
Introduction
- Type
- Apollo near-Earth asteroid; potentially hazardous; S-type.Source: [1] NASA JPL Solar System Dynamics
- Discovery
- Discovered: Sept. 14, 1951 by A. G. Wilson and R. Minkowski, Palomar Observatory.Source: [2] Wikipedia
Physical
- Size
- Mean diameter: ≈ 2.5 km; Dimensions: ≈ 5.0 × 2.0 × 2.1 km.Source: [1] NASA JPL Solar System Dynamics
- Mass
- Not measured in our sources.
- Rotation
- Rotation period: ≈ 5.22 hours (retrograde).Source: [2] Wikipedia
- Surface composition
- Geometric albedo: ≈ 0.29.Source: [1] NASA JPL Solar System Dynamics
- Moons
- None reported in our sources.
Orbit & access
- Orbit
- Distance from Sun: 0.83–1.66 AU; Orbital period: ≈ 1.39 years (≈ 508 days).Source: [1] NASA JPL Solar System Dynamics
- Accessibility (Δv / travel time)
- Model assumptionAbout 9.5 km/s of ideal Δv from low Earth orbit (3.31 km/s to depart + 6.21 km/s to arrive), and about 0.6 years for an ideal transfer.Model calculation from our Space Resource Intelligence (SRI) sample report: ideal two-impulse Hohmann transfer with a plane change, no gravity assists. Real trajectories differ.
- Mission history
- No spacecraft visit is listed in our sources. What is known comes from telescopes.
Resources & economy
- Believed resources
- Model assumptionOur model looks at bulk regolith for radiation shielding and construction feedstock. Usable fraction assumed at 0.5–0.9 of extracted material (bear to bull). Bulk regolith used with minimal processing (sorting/compaction) for shielding; 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 −$2,047M (bear), −$962M (base) and $6,492M (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 →