Llanerch-Y-Medd
UK19780901_A1 September 1978·Llanerch-Y-Medd·grass
Reported 1 September 1978 in grass at Llanerch-Y-Medd. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 1 September 1978 (day precision)
- place
- Llanerch-Y-Medd
Wales - crop
- grass
- size
- 100 ft (30.5 m) across
as written: 5 x 30 m | 16 x 100 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
- 51.688955, -4.150506
- 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 34.1 KiB image/jpeg |
image 7ee9bc1621b9 | https://www.cropcirclecenter.com/date/1978/197809.html |
Date
1 September 1978, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 1 September 1978
- weekday
- Friday, day 244 of the year, ISO week 35, autumn
- sun and moon
- 21.9 days before the September equinox; moon waning crescent (1% lit), 14.1 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
- 51.688955, -4.150506 — 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 | Isle of Anglesey | Wales | 51.688955, -4.150506 place / os_open_names |
Crop and size
- crop
- grass (cc: reed grass)
- diameter
- 100 ft (30.5 m)
- size as written
- 5 x 30 m | 16 x 100 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 | UK19780901_A |
| name | Llanerch-Y-Medd |
| location | |
| county | Isle of Anglesey |
| country | Wales |
| date reported | 1978-09-01 |
| date precision | day |
| crop | reed grass |
| size | 5 x 30 m | 16 x 100 ft |
| diameter (ft) | 100 |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1978/197809.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | no_formation_page |
| record | cc/9abf203e05c24… raw record view: /formation/cc/9abf203e05c24c995b5beb2ef713b31e1a641b0cd790932045c6b26f447def33 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 7ee9bc16 | ≈ 2-fold score 0.996 | 1 | 1 | 0.997 | 0.179 |
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 7ee9bc16— 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
- Winnipeg 5 August 1978, Winnipeg
- next
- Jenkins 9 October 1978, Jenkins
- previous in UK
- Headbourne Worthy 1 July 1978
- next in UK
- Faversham December 1978
- same day
- no other formation is dated this day
- 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.
Llanerch-Y-Med
0 m away, 1941-08 Cilycwm1947
Cilycwm
45.4 km away, 1947
Punch Bowl18 May 1990Punch Bowl
53.3 km away, 1990-05-18
Punch Bowl3 August 1993Punch Bowl
53.3 km away, 1993-08-03
Punch Bowl13 July 1994Punch Bowl
53.3 km away, 1994-07-13
Punch Bowl4 July 1995Punch Bowl
53.3 km away, 1995-07-04
- 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/UK19780901_A.json · row in index/manifest.jsonl
- input digests
- entity fd8cc39b23f2 · images c36c990f5ead · texts 4f53cda18c2b · geo 774aa857af5a