SPACE ENVIRONMENT STATISTICS
Daily snapshots of Earth's orbital environment — refreshed by the OrbitSmith catalog pipeline, plus 60+ years of historical trends
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Tracked Objects
Source: ESA DISCOS catalog
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Launches (2025)
Source: McDowell GCAT (CC-BY)
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Debris Objects
Source: ESA DISCOS, Jan 2026
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Fragmentation Events
Source: ESA DISCOS + literature
Objects in Orbit
Cataloged objects in Earth orbit by type, 1957–present
Launch Activity
Annual orbital launch attempts by country
Source: J.C. McDowell GCAT (CC-BY)
Constellation Growth
Major satellite constellations — satellites in orbit over time
Source: Space-Track.org + operator public disclosures
Fragmentation Events
Major debris-generating events in orbit (50+ tracked fragments)
ASAT / Deliberate
Collision
Propulsion
Electrical
Unknown
Source: ESA DISCOS + published literature (50+ tracked fragments)
Currently Tracked Objects
Active objects (decay-filtered) — Space-Track GP baseline + CelesTrak SupGP fused (differs from ESA total above). 2026-05-01: stale-EPOCH retention extended 30d→60d; objects previously dropped as stale are now retained (~+2.9k observed at the 2026-05-01 catalog rebuild).
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Source: Space-Track GP + CelesTrak GP/SupGP fused catalog — daily snapshot via OrbitSmith catalog pipeline
Collision Probability Distribution
Distribution of active conjunction events by reported collision probability (Pc)
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Source: Space-Track.org CDM Public — refreshed up to every 8h via OrbitSmith triage cron. Events without a reported PC are grouped into NO PC DATA. Empty risk tiers are hidden from the legend. Risk bands (HIGH/MODERATE/LOW/NEGLIGIBLE) are OrbitSmith-defined display groupings and are not official NASA/ESA categories — see About → Data & Methods.
Conjunction Activity Trend
Daily CDM count — Space-Track CDM Public, last 90 days
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Source: Space-Track.org CDM Public — snapshot via OrbitSmith catalog/statistics pipeline. Series semantics changed 2026-05-01 (issued-24h → TCA-forward 24h); snapshots paused 2026-04-30 to 2026-05-02 during Space-Track suspension recovery.
Reentry Activity Trend
Active TIP predictions and confirmed reentries — last 90 days
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Source: Space-Track.org TIP (predictions) + Decay (confirmed) — snapshot via OrbitSmith catalog pipeline. Snapshots paused 2026-04-30 to 2026-05-02 during Space-Track suspension recovery.
Weekly Space Environment Report
Automated summary of this week's orbital environment
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