Objects

Status

Live

Kind

Model product

Provider

JPL Solar System Dynamics / CNEOS

Organisation

NASA Jet Propulsion Laboratory, California Institute of Technology

Fetched

2026-09-17 02:46 UTC

Provider cadence

1 d

Cached for

1 h

Treated as stale after

1 d

Licence

Public domain (US Government work), NASA/JPL-Caltech.

Source file: https://ssd-api.jpl.nasa.gov/cad.api?date-min=now&date-max=%2B60&dist-max=0.05&sort=date&fullname=true&diameter=true

Near-Earth object close approaches from JPL Solar System Dynamics / CNEOS, fetched from https://ssd-api.jpl.nasa.gov/cad.api?date-min=now&date-max=%2B60&dist-max=0.05&sort=date&fullname=true&diameter=true. Close-approach solutions change only when an object's orbit is refitted from new observations, which happens on a timescale of days. An hour's cache is far finer than that, and JPL's Fair Use Policy asks that automated requests not be unnecessarily frequent.

Times are TDB (barycentric dynamical time), not UTC — the provider publishes them that way and AsteriaStar does not silently convert them. Distances are the nominal solution with 3-sigma minimum and maximum bounds alongside; a close approach is a computed prediction from a fitted orbit, not an observation. The window is the next 60 days within 0.05 au (about 20 lunar distances).

Status

Live

Kind

Model product

Provider

JPL Solar System Dynamics / CNEOS

Organisation

NASA Jet Propulsion Laboratory, California Institute of Technology

Fetched

2026-09-17 02:46 UTC

Provider cadence

1 d

Cached for

6 h

Treated as stale after

1 d

Licence

Public domain (US Government work), NASA/JPL-Caltech.

Source file: https://ssd-api.jpl.nasa.gov/sentry.api

Sentry impact-risk table from JPL Solar System Dynamics / CNEOS, fetched from https://ssd-api.jpl.nasa.gov/sentry.api. Sentry is re-run when new observations arrive for a listed object; entries persist for months or years and change slowly. Six hours is well inside that, and keeps a page view from becoming a request to a research service.

Impact probabilities are JPL's own, with JPL's own caveat that they can be wrong by a factor of a few and occasionally by ten or more. Diameters are estimated from absolute magnitude assuming an albedo of 0.154 unless a measurement exists. Objects LEAVE this table when further observations eliminate their potential impacts — a disappearance is good news, not missing data. The Torino scale is defined only for potential impacts less than a century away.

Status

Live

Kind

Observation

Provider

JPL Solar System Dynamics / CNEOS

Organisation

NASA Jet Propulsion Laboratory, California Institute of Technology

Fetched

2026-09-17 02:54 UTC

Provider cadence

1 d

Cached for

6 h

Treated as stale after

1 d

Licence

Public domain (US Government work), NASA/JPL-Caltech.

Source file: https://ssd-api.jpl.nasa.gov/sbdb_query.api?fields=full_name,pdes,neo,pha,H,diameter,first_obs,class,moid&sb-class=IEO,ATE,APO,AMO&sb-cdata=%7B%22AND%22%3A%5B%22first_obs%7CGE%7C2026-07-19%22%5D%7D&sort=-first_obs&limit=1000

Recently observed near-Earth objects from JPL Solar System Dynamics / CNEOS, fetched from https://ssd-api.jpl.nasa.gov/sbdb_query.api?fields=full_name,pdes,neo,pha,H,diameter,first_obs,class,moid&sb-class=IEO,ATE,APO,AMO&sb-cdata=%7B%22AND%22%3A%5B%22first_obs%7CGE%7C2026-07-19%22%5D%7D&sort=-first_obs&limit=1000. A new NEO enters the database once its orbit is computed, which happens over days. Six hours cannot delay one meaningfully, and the date window only advances once per day.

`first_obs` is the date of the FIRST OBSERVATION used in the orbit solution — not the date the object was announced, and not the date anyone recognised it as new. Absolute magnitude H is a brightness, not a size; a diameter appears only where one has actually been measured or modelled.