Welcome to JPL’s SSD (Solar System Dynamics) and CNEOS (Center for Near-Earth Object Studies) API (Application Program Interface) service. This service provides an interface to machine-readable data (JSON-format) related to SSD and CNEOS.
If you are looking for human-readable data, please go to the main websites for SSD and/or CNEOS.
The following APIs are available. A solid understanding of JSON is necessary to make use of these APIs.
API | Description |
---|---|
Fireball | Fireball atmospheric impact data reported by US Government sensors |
Horizons | Horizons system programattic (query-parameter-based) interface |
Horizons File | Horizons system programattic (file-based) interface |
Horizons Lookup | Horizons lookup service |
JD Date/Time Converter | Julian Day number to/from calendar date/time converter |
NHATS | Human-accessible NEOs data |
Periodic Orbits | Interactive interface to database of periodic orbits |
SB Close Approach | Asteroid and comet close approaches to the planets in the past and future |
SB Identification | Small-body identification within a specified FOV at a specific time |
SB Mission Design | Small-body mission design tool |
SB Observability | Provides a list of small-bodies observable on a specific date |
SB Radar | Small-body radar astrometry data |
SB Satellites | Small-body satellite data |
SBDB | Small-Body DataBase (SBDB) - primarily orbital data on all known asteroids and comets |
SBDB Query | Small-Body DataBase (SBDB) query tool |
Scout | NEOCP orbits, ephemerides, and impact risk data |
Sentry | NEO Earth impact risk assessment data |
version
field in
the API output to detect any change (in which case, you should come back to this site to
see what, if anything, in the data format/output changed).Every attempt has been made to ensure our APIs follow the REST architecture style. Although URI path mapping is often associated with REST APIs, they are not a requirement of REST. Because these APIs only get data from a database (no updates or deletes), query parameters are specified instead of using URI path mapping. Similarly, only GET and POST HTTP-request types are supported.
For additional NASA APIs, visit the webpage at https://api.nasa.gov/.