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- Source: inbox/queue/2026-04-21-neo-surveyor-2027-planetary-defense-gap.md - Domain: space-development - Claims: 0, Entities: 1 - Enrichments: 1 - Extracted by: pipeline ingest (OpenRouter anthropic/claude-sonnet-4.5) Pentagon-Agent: Astra <PIPELINE>
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2.9 KiB
Markdown
64 lines
No EOL
2.9 KiB
Markdown
# NEO Surveyor
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**Type:** Space telescope mission
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**Domain:** Planetary defense
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**Status:** Development (launch NET September 2027)
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**Operator:** NASA JPL
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**Launch Vehicle:** SpaceX Falcon 9
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**Destination:** Sun-Earth L1 point (~930,000 miles from Earth)
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**Mission Duration:** 5-year baseline survey
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## Overview
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NEO Surveyor is NASA's dedicated space telescope for detecting near-Earth objects (NEOs) that pose potential impact threats to Earth. The mission addresses a 20-year failure to meet Congressional detection mandates.
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## Mission Objectives
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- Find at least two-thirds of NEOs larger than 140 meters (460 feet) in diameter within 5 years of launch
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- Complete catalog coverage by ~2032
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- Address the "city-killer" asteroid detection gap (140m-1km range)
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## Technical Specifications
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- **Instrument:** 50cm infrared telescope
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- **Bands:** Two heat-sensing infrared bands
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- **Capability:** Detects both bright and dark asteroids
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- **Location:** Sun-Earth L1 Lagrange point for optimal viewing geometry
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## Context
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**Congressional Mandate:** In 2005, Congress mandated NASA to identify 90% of NEOs over 140 meters within 15 years (by 2020). As of April 2025, only 44% have been catalogued — a dramatic failure of the mandate nearly 20 years later.
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**Detection Gap:** For extinction-level objects (>1km), ~95% are already tracked with none posing near-term threats. The critical gap is in the 140m-1km "city-killer" range where NEO Surveyor will operate.
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**Catalog Progress:** Total NEOs identified from September 2014 to April 2025: 26,000+ out of 38,000+ total known.
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## Planetary Defense Pipeline
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NEO Surveyor provides the detection prerequisite for the complete planetary defense response pipeline. Combined with DART's validated deflection capability (β=3.61), the system will have:
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1. High catalog coverage of 140m+ threats by ~2032 (detection)
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2. Proven deflection technique for detected rubble-pile asteroids (response)
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## Limitations
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NEO Surveyor does not address long-period comets (LPCs) arriving from the outer solar system with only weeks to months of warning — far too short for kinetic deflection. LPCs remain an unaddressed category of planetary impact threat.
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## Timeline
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- **2005** — Congressional mandate to identify 90% of NEOs >140m by 2020
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- **2020** — Mandate deadline missed; only ~44% catalogued
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- **September 2027** — Planned launch (NET)
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- **~2032** — Expected completion of 2/3 detection goal
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## Related Missions
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- **DART:** Validated kinetic impactor deflection technique
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- **China kinetic impactor test:** 2026 launch target for hybrid deflection/observation test
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## Funding Context
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NASA's planetary defense budget grew from ~$4M/year in early 2000s to ~$200M/year currently, split between:
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- Ground-based observations: ~$40M/year
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- Flight missions: remainder
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Despite budget growth, the 20-year detection gap reveals a governance failure where mandate and funding were misaligned. |