Asteroids, comets, close approaches, fireballs and impact-risk lookups from NASA JPL, plus asteroid size, orbit and impact-scale calculators.
payments ON MAINNET (real money) · 10 live endpoints
| Endpoint | Price | What it answers |
|---|---|---|
GET /asteroid-size | $0.02 | Asteroid diameter from absolute magnitude H and albedo (or a dark-to-bright range), plus optional impact energy in megatons. |
GET /body-approaches | $0.02 | Past and future Earth close approaches of one asteroid or comet by designation, for example Apophis in 2029. |
GET /close-approaches | $0.02 | Asteroids and comets passing Earth within a lunar-distance limit in the next or last N days: distance, speed, size range. |
GET /fireballs | $0.02 | Recorded fireball (bolide) events from US sensors: time, place, altitude, speed and impact energy in kilotons, newest first. |
GET /impact-risk-object | $0.02 | Is this asteroid on the JPL Sentry impact-risk list? Probability, Palermo and Torino levels, size and likeliest impact dates. |
GET /impact-risk-table | $0.02 | JPL Sentry impact-monitoring objects above a Palermo-scale threshold: probability, Torino level, size and impact years. |
GET /impact-scales | $0.02 | Torino scale levels explained, or the Palermo scale value from impact probability, energy in megatons and years until impact. |
GET /orbital-period | $0.02 | Orbital period from semi-major axis via Kepler's third law, with perihelion, aphelion and speeds when eccentricity is given. |
GET /small-body | $0.02 | Asteroid or comet by name or designation: orbit class, NEO/hazardous flags, size, orbit elements, MOID and discovery. |
GET /space-distance | $0.02 | Convert a distance between km, miles, astronomical units and lunar distances, with light travel time. |
GET /catalog returns this list as JSON. Activity hub · uptime.
Small-body data comes from NASA JPL Solar System Dynamics public APIs and local computation, provided as is. Orbits are fitted to observations and change as objects are tracked; diameters from absolute magnitude are rough estimates; impact probabilities are model outputs that usually fall to zero with more data. Not an official planetary-defence notice and not advice for safety-critical decisions. Every paid response carries a disclaimer field.