Sibson
UK19910723_C23 July 1991·Sibson, Cambridgeshire
Reported 23 July 1991 at Sibson, Cambridgeshire. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 23 July 1991 (day precision)
- place
- Sibson
Cambridgeshire
England - crop
- not recorded by any source
- size
- not recorded
as written: 26 + 72 m | 85 + 236 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
- 52.568263, -0.388258
- how it was got
- os open names
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 48.4 KiB image/jpeg |
image af3e23e682cb | https://www.cropcirclecenter.com/date/1991/199107.html |
Date
23 July 1991, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 23 July 1991
- weekday
- Tuesday, day 204 of the year, ISO week 30, summer
- sun and moon
- 31.6 days after the June solstice; moon waxing gibbous (91% lit), 3.3 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
- 52.568263, -0.388258 — place, ±2,000 m, by os_open_names, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Cambridgeshire | England | 52.568263, -0.388258 place / os_open_names |
Crop and size
- crop
- not recorded (cc: —)
- diameter
- not recorded by any source
- size as written
- 26 + 72 m | 85 + 236 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 | UK19910723_C |
| name | Sibson |
| location | |
| county | Cambridgeshire |
| country | England |
| date reported | 1991-07-23 |
| date precision | day |
| crop | |
| size | 26 + 72 m | 85 + 236 ft |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1991/199107.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | no_formation_page |
| record | cc/0fa938bb8a2d0… raw record view: /formation/cc/0fa938bb8a2d00b31931eaa598766395edb72f2809452d18bc7e988d4472486d 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 af3e23e6 | ≈ none found | 3 | 0 | 0.973 | 0.0855 |
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 af3e23e6— 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
- Pycombe 22 July 1991, Pycombe
- next
- Dollrottfeld 24 July 1991, Dollrottfeld
- previous in UK
- Pycombe 22 July 1991
- next in UK
- Lockeridge 25 July 1991
- same day
- Sidney (Sidney) · Grasdorf (Grasdorf) · East Kennett (East Kennett) · Milk Hill (Milk Hill) · UK19910723_D · Upton Scudamore (Upton Scudamore)
- 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.
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/UK19910723_C.json · row in index/manifest.jsonl
- input digests
- entity df581edbdb18 · images e566e8ff18b9 · texts 4f53cda18c2b · geo 945052da40fc