How to Read NASA CNEOS Fireball Data
Decode core CNEOS fields and translate them into practical meteorite-hunting decisions.
Who this is for
Hunters using satellite-confirmed events to shortlist high-confidence candidates.
Why it matters
CNEOS data is highly valuable for triage, but only if you interpret fields correctly and understand what the data can and cannot resolve.
What you'll learn
- How to prioritize key CNEOS fields quickly.
- How to infer search practicality from those fields.
- When to seek additional source confirmation.
Fields to read first
Start with time, location, velocity, and altitude behavior. These core fields establish whether the event is geographically actionable and physically plausible for survival.
Energy fields provide useful context for event scale but should not be treated as direct recovery probability. Combine them with velocity and terminal clues for better decisions.
From columns to survivability
Lower terminal behavior and moderate speed generally improve the case for surviving material. Very high-altitude signatures can indicate dominant burn-up.
Always interpret fields together. A single favorable value does not override contradictory indicators elsewhere in the record.
Interpretation pitfalls
A common mistake is treating coordinate precision as an exact ground-impact point. In reality, search planning still requires uncertainty buffers and terrain-aware routing.
Another error is overvaluing one impressive metric, such as energy, while overlooking weaker survival indicators or poor local accessibility.
When CNEOS is enough and when it is not
CNEOS can be sufficient for initial triage and local search planning when core indicators align. It is especially useful as a high-confidence baseline in mixed-source systems.
For travel-heavy hunts, cross-check with GMN or AMS context if available. Extra source agreement can prevent costly overcommitment to ambiguous cases.
Common mistakes
- Reading data tables as direct strewn-field maps.
- Ignoring access constraints because source confidence is high.
- Skipping recency checks before field mobilization.
Field checklist
- Capture key CNEOS values in your hunt notes.
- Cross-check with other sources where possible.
- Draft a bounded first-pass search zone, not a single point.