Ridderkerk
NL20010825_A25 August 2001·Ridderkerk·wheat
Reported 25 August 2001 in wheat at Ridderkerk. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 25 August 2001 (day precision)
- place
- Ridderkerk
The Netherlands - crop
- wheat
- size
- 90 ft (27.4 m) across
as written: 27,5 m | 90 ft - 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
- 51.872500, 4.602780
- how it was got
- geonames
place, to within 2,000 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 | diagram | cropcirclecenter.com / Bertold Zugelder | site default | 575×415 37.0 KiB image/jpeg |
image a22d96d6ebe4 | https://www.cropcirclecenter.com/date/2001/200108.html |
Date
25 August 2001, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 25 August 2001
- weekday
- Saturday, day 237 of the year, ISO week 34, summer
- sun and moon
- 28.5 days before the September equinox; moon first quarter (47% lit), 8.4 days before 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
- 51.872500, 4.602780 — place, ±2,000 m, by geonames, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Zuid-Holland | The Netherlands | 51.872500, 4.602780 place / geonames |
Crop and size
- crop
- wheat (cc: wheat)
- diameter
- 90 ft (27.4 m)
- size as written
- 27,5 m | 90 ft
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 | NL20010825_A |
| name | Ridderkerk |
| location | |
| county | Zuid-Holland |
| country | The Netherlands |
| date reported | 2001-08-25 |
| date precision | day |
| crop | wheat |
| size | 27,5 m | 90 ft |
| diameter (ft) | 90 |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/2001/200108.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | no_formation_page |
| record | cc/a36c6463ee315… raw record view: /formation/cc/a36c6463ee3155cc0530f0709742921fef215f5f7afcaeead429fc5aad9beb4c 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. 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 a22d96d6 | ≈ 2-fold score 0.929 | 5 | 1 | 0.96 | 0.1916 |
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 a22d96d6— 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
- Copdock Hill 23 August 2001, Copdock Hill
- next
- Avebury Trusloe 26 August 2001, Avebury Trusloe
- previous in NL
- Herveld 22 August 2001
- next in NL
- Eefde 28 August 2001
- same day
- Manning (Manning) · Celle (Celle)
- 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.
Ridderkerk8 August 2001Ridderkerk
0 m away, 2001-08-08
Ridderkerk24 July 2009Ridderkerk
0 m away, 2009-07-24 Hendrik-Ido-Ambacht25 July 1994
Hendrik-Ido-Ambacht
4.0 km away, 1994-07-25
Barendrecht4 July 2000Barendrecht
5.0 km away, 2000-07-04
Heinenoord15 July 2002Heinenoord
10.1 km away, 2002-07-15
Charloisse Poort16 July 2007Charloisse Poort
10.2 km away, 2007-07-16
- same county and year
- none
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/NL20010825_A.json · row in index/manifest.jsonl
- input digests
- entity 9b344c74f7f1 · images 2343015592dc · texts 4f53cda18c2b · geo ac57630a098f