Heathrow Airport
UK19990909_B9 September 1999·Heathrow Airport, Berkshire·wheat
Reported 9 September 1999 in wheat at Heathrow Airport, Berkshire. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 9 September 1999 (day precision)
- place
- Heathrow Airport
Berkshire
England - crop
- wheat
- size
- not recorded
- recorded by
- cc
- images
- 1 · 1 diagram
- writing
- nothing was written about this formation on any source
Also called
Nothing else. No other name or place string appears on any source record for this formation.
Where exactly
- coordinate
- 52.987860, -2.064240
- how it was got
- country centroid
country, to within 364,084 m, from the cc record - on a map
- OpenStreetMap
No source publishes a coordinate for any formation in this archive. Every coordinate here is derived from the place name a source printed, and this page says how precise that makes it rather than rounding it away.
Images
1 image(s) on this formation's own source records. Click a tile for the full image; the bytes are fetched when you ask for them and are not stored in this page.
Diagrams (1)
| site | kind | credit | basis | caption | size | file | source page |
|---|---|---|---|---|---|---|---|
| cc same file as tt |
diagram no diagram published by cropcirclecenter (“no diagram” tile) |
cropcirclecenter.com / Bertold Zugelder | site default | 575×415 66.1 KiB image/jpeg |
image 3461dff5df5d | https://www.cropcirclecenter.com/date/1999/199909.html |
Date
9 September 1999, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 9 September 1999
- weekday
- Thursday, day 252 of the year, ISO week 36, autumn
- sun and moon
- 14.0 days before the September equinox; moon new (0% lit), 13.5 days after the full moon (computed at 12:00 UTC; a reported date is a discovery date, not a creation date)
Place
What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.
- coordinate
- 52.987860, -2.064240 — country, ±364,084 m, by country_centroid, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Berkshire | England | 52.987860, -2.064240 country / country_centroid |
Crop and size
- crop
- wheat (cc: wheat)
- diameter
- not recorded by any source
- size as written
- not recorded
Source records
What each source published, side by side. A row whose values differ across the sources is marked: the archive prints the disagreement rather than choosing a winner.
| field | cc cropcirclecenter.com |
|---|---|
| id / slug | UK19990909_B |
| name | Heathrow Airport |
| location | |
| county | Berkshire |
| country | England |
| date reported | 1999-09-09 |
| date precision | day |
| crop | wheat |
| size | |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1999/199909.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | no_formation_page |
| record | cc/cc5ced3600823… raw record view: /formation/cc/cc5ced36008235e1e1de71feaffe6efc6c2639fc652caed7e4496c0b345231b7 in the preview app |
Texts
no text documents in the archive for this formation
Claims about this formation
no claim was extracted from a text about this formation
Geometry
1 diagram file(s) on this page, of which 1 is a shared cropcirclecenter placeholder rather than a drawing of this formation. measured from the diagram itself, and experimental: the extractor's rotational order is right on 88.8 % of a 200-diagram hand-labelled set against a gate of 90 %, so read a number here beside the picture rather than instead of it.
| diagram | rotational symmetry | elements | rings | mirror | fill |
|---|---|---|---|---|---|
| cc 3461dff5 (placeholder: digest) | ≈ 2-fold score 0.906 | 4 | 3 | 0.853 | 0.3434 |
Experimental, and marked ≈ wherever it appears. These numbers are read off a drawing, not off the field: the extractor's rotational order agrees with a hand-labelled set on 88.8 per cent of 200 diagrams against a gate of 90 per cent, its element count is within one on 97.5 per cent, and its ring count is not calibrated at all. Nothing in the analysis tree is derived from the rotational order while that gate is unmet.
Diagrams that look like these: cc 3461dff5— the nearest by perceptual hash. The whole archive is browsable by shape in the shape section, and this formation's own diagrams go straight into that grid: show them in the grid.
Neighbours
In time
- previous
- Midale 6 September 1999, Midale
- next
- Midale 14 September 1999, Midale
- previous in UK
- Avebury Manor 1 September 1999
- next in UK
- Bishops Cannings 12 October 1999
- same day
- Heathrow Airport (Heathrow Airport)
- within 7 days and 25 km
- none, or this formation has no coordinate at place confidence or better
In place
The nearest formations the archive can place.
this formation has no coordinate at place confidence or better, so nothing can be called near it
- same county and year
- Heathrow Airport 9 September 1999
Provenance
- entity built at
- 2026-09-11T19:20:39Z (derived from the link decisions, not from this build)
- index run ids
- none
- reviews applied
- none
- open queue pairs
- none
- entity record
- index/formations/UK19990909_B.json · row in index/manifest.jsonl
- input digests
- entity 47931d631722 · images cde4d9495e39 · texts 4f53cda18c2b · geo c7c99c9d96cd