Potentially hazardous asteroids
Every asteroid NASA JPL classifies as potentially hazardous: large enough (absolute magnitude 22 or brighter, roughly 140 m or more across) and with an orbit passing within 0.05 AU (about 7.5 million km) of Earth's. One row per asteroid, with orbit, size and closest possible distance to Earth's orbit.
Columns
Stable keys — use them in the API, SQL and code
| Key | Name | Type | Description |
|---|---|---|---|
| designation | Designation | string | Primary designation: a number for numbered asteroids (e.g. 99942), otherwise a provisional designation (e.g. 2023 DW). |
| full_name | Asteroid | string | — |
| name | Name | string | Official name, if any (e.g. Apophis). |
| orbit_class | Orbit class | string | Apollo, Aten, Amor or Atira. |
| absolute_magnitude | Absolute magnitude (H) | number | Intrinsic brightness; lower means larger. |
| diameter_km | Diameter | number · km | Measured diameter, where known. |
| albedo | Albedo | number | Geometric albedo (fraction of light reflected), where measured. |
| earth_moid_au | Earth MOID | number · AU | Minimum distance between the asteroid's orbit and Earth's orbit. |
| earth_moid_ld | Earth MOID (lunar distances) | number · LD | Earth MOID expressed in mean Earth–Moon distances (384,400 km). |
| semi_major_axis_au | Semi-major axis | number · AU | — |
| eccentricity | Eccentricity | number | — |
| inclination_deg | Inclination | number · ° | Tilt of the orbit to Earth's orbital plane. |
| perihelion_au | Perihelion | number · AU | Closest distance to the Sun. |
| period_years | Period | number · years | Orbital period. |
| first_observed | First observed | date | Date of the first observation used in the orbit. |
| last_observed | Last observed | date | — |
| observations | Observations | integer | Number of observations used to compute the orbit. |
| url | JPL page | url | — |
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