# $FLYBY · Asteroids that passed close to Earth

Close approaches to Earth by near-Earth asteroids and comets within 0.05 astronomical units (about 7.5 million kilometres, under twenty lunar distances) in a month, by the time of closest approach, as NASA JPL's Close Approach Data lists them. Read again every day, so a rock found after it passed is added to its month, and the record keeps the revision. Times are JPL's (TDB, about a minute off UTC). Counted from January 2010.

| Field | Value |
| --- | --- |
| Newest complete period | Oct 2026: 180 approaches, score 8, Quiet |
| Source | NASA JPL Solar System Dynamics, SBDB Close Approach Data API, Earth, 0.05 au (https://ssd-api.jpl.nasa.gov/doc/cad.html) |
| Terms | JPL asks for a citation (Solar System Dynamics, https://ssd.jpl.nasa.gov) and names no licence for the API. |
| Cadence | Monthly. JPL updates the list as orbits are computed; a month prints seven days after it ends. |
| Grade | display |
| Rulebook | Rulebook v0.2, 2026-10-04 |

## Settlement

Why this grade: Many close approaches are found only after the rock has passed, so a month keeps growing. JPL names no licence. Shown, not settled on.
What it costs to move: Not practical. The list is computed from confirmed orbits.
When the source is late: A month prints seven days after it ends. If the newest month has no approach, the read fails and the month stays open. A month JPL never lists is void.
Precision: Whole close approaches within 0.05 au, by JPL's time of closest approach.

## As first published, and the proof

Not on-chain yet. The newest complete period goes on-chain with the daily proof at 12:40 UTC.

## Last 30 complete periods

| Period | Level | Change | Band |
| --- | ---: | ---: | --- |
| Oct 2026 | 180 approaches | -2.2% | Quiet |
| Sep 2026 | 184 approaches | +91.7% | Normal |
| Aug 2026 | 96 approaches | +18.5% | Quiet |
| Jul 2026 | 81 approaches | -15.6% | Quiet |
| Jun 2026 | 96 approaches | -30.4% | Quiet |
| May 2026 | 138 approaches | +2.2% | Quiet |
| Apr 2026 | 135 approaches | -43.5% | Quiet |
| Mar 2026 | 239 approaches | +48.4% | Normal |
| Feb 2026 | 161 approaches | -1.8% | Quiet |
| Jan 2026 | 164 approaches | -14.1% | Quiet |
| Dec 2025 | 191 approaches | -1.0% | Quiet |
| Nov 2025 | 193 approaches | -12.3% | Quiet |
| Oct 2025 | 220 approaches | +16.4% | Normal |
| Sep 2025 | 189 approaches | +42.1% | Quiet |
| Aug 2025 | 133 approaches | +41.5% | Quiet |
| Jul 2025 | 94 approaches | +23.7% | Quiet |
| Jun 2025 | 76 approaches | -16.5% | Quiet |
| May 2025 | 91 approaches | -34.1% | Quiet |
| Apr 2025 | 138 approaches | -24.6% | Quiet |
| Mar 2025 | 183 approaches | +19.6% | Quiet |
| Feb 2025 | 153 approaches | +10.1% | Quiet |
| Jan 2025 | 139 approaches | -25.7% | Quiet |
| Dec 2024 | 187 approaches | 0.0% | Quiet |
| Nov 2024 | 187 approaches | -24.9% | Quiet |
| Oct 2024 | 249 approaches | +16.9% | Normal |
| Sep 2024 | 213 approaches | +117.3% | Elevated |
| Aug 2024 | 98 approaches | +69.0% | Quiet |
| Jul 2024 | 58 approaches | -27.5% | Quiet |
| Jun 2024 | 80 approaches | -27.3% | Quiet |
| May 2024 | 110 approaches | -17.9% | Quiet |

JSON: https://tickerz.com/api/indices/flyby

## Asked often

**How many asteroids pass close to Earth each month?** 180 asteroids and comets passed within 0.05 astronomical units of Earth in Oct 2026, as NASA JPL's close approach list gives them, counted by Tickerz.

**Where does the $FLYBY number come from?** Tickerz reads it from NASA JPL Solar System Dynamics, SBDB Close Approach Data API, Earth, 0.05 au. Monthly. JPL updates the list as orbits are computed; a month prints seven days after it ends. Each number is kept as it was first published, with a timestamped proof, and any later revision is shown beside it.

**Can I download the $FLYBY data?** Yes, free and with no key: the full history as JSON at https://tickerz.com/api/indices/flyby and every period as CSV at https://tickerz.com/api/indices/flyby/history.csv.

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Name a number you want counted. Within 48 hours it is a ticker, or you get the plain reason it cannot be built. POST https://tickerz.com/api/indices/requests with {"counts": "...", "source_url": "..."}, or the MCP tool name_a_number. Answers: https://tickerz.com/x#x-request

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