Near Earth Asteroid Approaches
Upcoming close approaches of asteroids and comets to Earth, with date, distance and speed.
Computed close-approach events for near-Earth objects from NASA's Jet Propulsion Laboratory, covering the coming year within a defined distance threshold. Each row gives the object designation, approach time, nominal and minimum distance, relative velocity and brightness. Space-sector tools, science media and educational products use it to show what is passing by and when.
Source: NASA JPL Center for Near-Earth Object Studies — Close-Approach Data API · Public Domain (U.S. Government Work) · Data courtesy NASA/JPL-Caltech, Center for Near-Earth Object Studies Close-Approach Data API.
Endpoints
Every request is authenticated with your X-API-Key and counted against your plan.
- GET /v1/data/near-earth-asteroid-approaches
- GET /v1/data/near-earth-asteroid-approaches/search?q=...
- GET /v1/data/near-earth-asteroid-approaches/{key}
Base path /v1/data/near-earth-asteroid-approaches · full reference in the interactive docs. Also exposed as an MCP tool for AI agents.
Fields
| Field | Type | Description |
|---|---|---|
| designation | str | Object primary designation, e.g. 2024 AB1 or 433 Eros |
| orbit_id | str | Identifier of the orbit solution used for the prediction |
| close_approach_time | str | Close-approach date and time in universal time, as published by the source |
| julian_date | float | Close-approach time as a Julian date, useful for sorting and maths |
| distance_au | float | Nominal approach distance in astronomical units |
| distance_min_au | float | Minimum approach distance within the uncertainty range, in astronomical units |
| distance_max_au | float | Maximum approach distance within the uncertainty range, in astronomical units |
| relative_velocity_km_s | float | Velocity relative to Earth at approach, kilometres per second |
| absolute_magnitude | float | Absolute magnitude, a proxy for object size — smaller numbers mean larger objects |
What you get
FAQ
- Are these predictions or observations?
- They are computed predictions from current orbit solutions, and they shift slightly as new observations refine an object's orbit.
- What is an astronomical unit?
- Roughly 150 million kilometres, the average Earth–Sun distance. Most listed approaches are a small fraction of that.
- Does a close approach mean an impact risk?
- No. Close approach simply means passing within the distance threshold; impact risk is assessed separately.
- How often is it refreshed?
- We re-ingest daily so the rolling one-year window and any updated orbit solutions stay current.
Pricing
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