Connecting to JPL CNEOS

Live Asteroid + Comet Threat Dashboard

Near-Earth close approaches sorted by closest distance, scored into Green / Yellow / Red watch levels using distance, velocity, estimated brightness, and object naming. Built for the TESS Planetary Defense Foundation mission-control stack.

Objects tracked

Current window

Closest pass

Lunar distances

Highest watch

TESS public scale

Last refresh

Browser local time

Earth approach radar7 day window

1 LD384,400 km

Tracking NEO1 LD MarkedCNEOS Link

Close Approach Object Feed

Loading live CNEOS close-approach data...

Initializing TESS object watch feed...

Object	Watch	Closest approach	Distance	Velocity	H mag

Watch Rules

GreenNominal public watch: distant close approach, no immediate threshold concern.

YellowCloser or faster object: monitor, verify catalog data, prepare follow-up if relevant.

RedVery close / fast / bright candidate: public page highlights it, but official escalation still requires expert review.

TESS Watch Notes

NASA/JPL source

CNEOS CAD provides close-approach distances, times, relative velocities, and absolute magnitude H when available.

Comet labeling

Objects with comet-style designations such as C/, P/, D/, or comet keywords are labeled as comet candidates.

Distance scale

1 lunar distance is approximately 384,400 km. Dashboard scoring uses lunar-distance thresholds for fast visual triage.

Data Source

Source: NASA/JPL CNEOS Close-Approach Data API.

Local proxy route: /api/cad. No browser-side API key is used.