#neo

Live near-Earth object close approaches as an API, straight from NASA/JPL's Close-Approach Data (CAD) system. List the asteroids and comets passing nearest Earth over the next N days (or look back), with the approach date, miss distance (in astronomical units, lunar distances and kilometres), relative velocity and an estimated diameter from the object's absolute magnitude; or pull the full close-approach history for a specific object (e.g. 99942 Apophis, 101955 Bennu). Ideal for planetary-defense dashboards, astronomy & space apps, education and "asteroid of the week" content.

api.oanor.com/closeapproach-api

The NASA/JPL Small-Body Database (SBDB) as an API — 30,000+ named asteroids and comets with their physical and orbital properties. Look up any minor body by number (e.g. 1 → Ceres), name (Vesta) or SPK-ID; search by name with filters for orbit class, near-Earth (NEO) and potentially-hazardous (PHA) status; or list every near-Earth object. Each record carries the diameter, albedo, absolute magnitude, rotation period and the osculating orbit (semi-major axis, eccentricity, inclination, period) plus the orbit class (main-belt, Apollo, Trojan, …). Ideal for astronomy apps, planetarium software, education and space dashboards.

api.oanor.com/asteroids-api