Tvedestrand
NO19990800_Aearly August 1999·Tvedestrand
Reported early August 1999 at Tvedestrand. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- early August 1999 (month precision, “early”)
- place
- Tvedestrand
Norway - crop
- not recorded by any source
- size
- 141 ft (43.0 m) across
as written: 43 m | 141 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
- 58.622030, 8.931470
- 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 34.4 KiB image/jpeg |
image d2a82ffb5ba9 | https://www.cropcirclecenter.com/date/1999/199908.html |
Date
early August 1999, to month precision. What a source records is the day a formation was found and reported.
- reported by
- cc: August 1999
Place
What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.
- coordinate
- 58.622030, 8.931470 — place, ±2,000 m, by geonames, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Aust-Agder | Norway | 58.622030, 8.931470 place / geonames |
Crop and size
- crop
- not recorded (cc: —)
- diameter
- 141 ft (43.0 m)
- size as written
- 43 m | 141 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 | NO19990800_A |
| name | Tvedestrand |
| location | |
| county | Aust-Agder |
| country | Norway |
| date reported | 1999-08 |
| date precision | month |
| crop | |
| size | 43 m | 141 ft |
| diameter (ft) | 141 |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1999/199908.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | unknown_day; no_formation_page |
| record | cc/9bcea6f22a5c4… raw record view: /formation/cc/9bcea6f22a5c4daa8e90a9a916dcbf85bb0ee09c6ca2c38fa17cf2f135faec00 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 d2a82ffb | ≈ 2-fold score 0.87 | 1 | 0 | 0.95 | 0.0774 |
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 d2a82ffb— 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
- Wroughton 31 July 1999, Wroughton
- next
- Henwood 3 August 1999, Henwood
- previous in NO
- Fjellhamar 27 July 1999
- next in NO
- Asker 11 August 1999
- same day
- Alamed (Alamed) · Weymore (Weymore) · Moosomin (Moosomin) · Ruurlo (Ruurlo) · Cheesefoot Head (Cheesefoot Head) · Milk Hill (Milk Hill) · Poynings (Poynings)
- 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.
Porsgrunn18 July 2013Porsgrunn
71.1 km away, 2013-07-18
Skien27 June 2007Skien
76.0 km away, 2007-06-27
Larvik9 July 1997Larvik
79.6 km away, 1997-07-09 Åsgårdstrand9 June 1991
Åsgårdstrand
119.6 km away, 1991-06-09
Vinje School11 December 2003Vinje School
127.2 km away, 2003-12-11
OnsøySeptember 2011Onsøy
134.2 km away, 2011-09
- 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/NO19990800_A.json · row in index/manifest.jsonl
- input digests
- entity 5c9f418bab73 · images 013727458ed5 · texts 4f53cda18c2b · geo b8d2c85bac42