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Space Objects - Body Close Approaches
x402
Space Objects - Body Close Approaches is a paid API for AI agents from space-objects.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Returns past and future Earth close-approach events for a specific asteroid or comet by designation, with distances, dates, and uncertainty data.
Price / call$0.02
Success—
StatusUnknown
How this service works
Past and future Earth close approaches of one asteroid or comet by designation, for example Apophis in 2029.
Output
Returns a list of close-approach events for the specified body, each with approach date (TDB), miss distance in km/lunar distances/AU, distance uncertainty range (min/max AU), days from now, and time uncertainty. Also includes a summary narrative, a verdict on significance, the closest approach record, metadata about data source and freshness, and a degraded flag if data quality is reduced.
Example use cases
Tracking Apophis 2029 flyby
“I've been following the Apophis asteroid — can you look up its close approaches to Earth around 2029, specifically anything within 5 lunar distances, and tell me how close it will actually get in kilometers?”
Historical flyby research for Eros
“I need to research all recorded close approaches of asteroid 433 Eros from 1900 to today — can you fetch up to 50 passes and show me the dates, miss distances, and which one was the closest?”
Comet future pass monitoring
“Can you check when comet 2004 MN4 is expected to pass near Earth in the next 50 years, filtering to approaches within 20 lunar distances, so I can see if there are any notable flybys coming up?”
Technical details
Endpoint
GEThttps://space-objects.x402tookit.com/body-approaches?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need close-approach history or predictions for a SPECIFIC named asteroid or comet (by designation or number). Prefer it over the general 'upcoming approaches' endpoint when the user cares about one particular body across all time, rather than all bodies in a short window. Best for detailed flyby research, press/public communications about a named object, or planetary defense monitoring of a designated NEO.
Side effects
- Invalid or unrecognized designation returns an error or empty result
- Date range too narrow may return zero approaches
- maxDistanceLD set too small may return no results for widely-passing bodies
- Limit of 1–50 enforced; values outside range rejected
- Service unavailable or upstream NASA/JPL data outage returns degraded flag or error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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