{"uid":"cap_npwRe3W_3HHNLQYsNjDHA","slug":"saylor-innovations-asteroid-close-approaches-nasa-jpl-cneos-1aa8c626","name":"Saylor Innovations Asteroid Close Approaches (NASA/JPL CNEOS)","description":"Upcoming Asteroid Close Approaches to Earth (NASA/JPL CNEOS). Upcoming asteroid and comet close approaches to Earth (NASA/JPL CNEOS): every flyby in the next 1-365 days within a chosen distance, with date, distance in km and lunar distances, relative velocity, size or size estimate, and the closest pass highlighted. Public domain.","url":"https://saylorinnovations.com/api/asteroids/close-approaches?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","POST","PUT","PATCH","DELETE","HEAD"],"type":"string"},"queryParams":{"type":"object","properties":{"days":{"type":"string","description":"look-ahead window 1-365, default 60 (query)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":["found"],"properties":{"count":{"type":"number"},"found":{"type":"boolean"},"closest":{"type":"object"},"approaches":{"type":"array","items":{"type":"object"}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LbyWVsj5nTFrdSOZAHm6k","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a list of upcoming asteroid and comet close approaches to Earth within a specified look-ahead window (1–365 days), sourced from NASA/JPL CNEOS data.","exampleAgentPrompt":"What asteroids or comets are making close approaches to Earth in the next 90 days? Give me their dates, distances in lunar distances, velocities, and sizes, and highlight the closest one.","exampleUseCases":[{"title":"Daily asteroid flyby briefing","prompt":"Every morning, pull the upcoming asteroid close approaches for the next 30 days from NASA/JPL and summarize any objects coming within 10 lunar distances, including their size and speed."},{"title":"Science class space event planning","prompt":"I'm teaching an astronomy unit — can you find all asteroid close approaches to Earth in the next 60 days so I can plan a observation and discussion session around the most dramatic flyby?"},{"title":"Planetary defense monitoring alert","prompt":"Check the next 180 days of NASA asteroid close approaches and flag any object larger than 100 meters that comes within 5 lunar distances of Earth, with its exact date and velocity."}],"resultDescription":"A JSON object containing a boolean 'found' field, a count of matching approaches, an array of close approach objects (each with date, distance in km and lunar distances, relative velocity, and size estimate), and a 'closest' object highlighting the nearest upcoming flyby.","failureModes":["Invalid 'days' parameter outside 1–365 range returns an error or empty result","No close approaches found within the specified window returns found: false with empty array","Upstream NASA/JPL CNEOS data unavailable causes fetch failure or stale data","Missing or malformed query parameter may trigger a 400-level error"],"whenToPreferThis":"Use this endpoint when you need near-real-time, structured data on upcoming asteroid and comet close approaches sourced directly from NASA/JPL CNEOS, especially when you need flyby distance, velocity, and size in a single call with the closest approach pre-highlighted. Prefer this over raw NASA APIs when you want a simple REST interface with per-call pricing and no API key setup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T12:54:44.895Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-asteroid-close-approaches-nasa-jpl-cneos-1aa8c626"}