Waltham
US19790933_ASeptember 1979·Waltham
Reported September 1979 at Waltham. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- September 1979 (month precision)
- place
- Waltham
United States - crop
- not recorded by any source
- 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
- 42.376490, -71.235610
- 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 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/1979/197909.html |
Date
September 1979, to month precision. What a source records is the day a formation was found and reported.
- reported by
- cc: September 1979
Place
What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.
- coordinate
- 42.376490, -71.235610 — place, ±2,000 m, by geonames, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Massachusetts | United States | 42.376490, -71.235610 place / geonames |
Crop and size
crop and size not recorded by any source
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 | US19790933_A |
| name | Waltham |
| location | |
| county | Massachusetts |
| country | United States |
| date reported | 1979-09 |
| date precision | month |
| crop | |
| size | |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1979/197909.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | unknown_day; no_formation_page |
| record | cc/d67e9c8c42ed7… raw record view: /formation/cc/d67e9c8c42ed7ced5940eb9cf0e43e9d8e557b7f733a1bc9c93bfb4f6724f184 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
- Litchfield 1 July 1979, Litchfield
- next
- Red Deer River 1980s, Red Deer River
- previous in US
- Oak Harbour 1979
- next in US
- Cœur d'Alene 1980
- same day
- Boughton (Boughton)
- 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.
Watertown8 August 1996Watertown
4.4 km away, 1996-08-08
Charles RiverJanuary 1991Charles River
15.3 km away, 1991-01 Charles River1 February 1993
Charles River
15.3 km away, 1993-02-01
Chelmsford5 August 1993Chelmsford
27.1 km away, 1993-08-05
Scituate1992Scituate
46.5 km away, 1992 Manchester1932
Manchester
71.1 km away, 1932
- 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/US19790933_A.json · row in index/manifest.jsonl
- input digests
- entity 0a392e7238b6 · images cde4d9495e39 · texts 4f53cda18c2b · geo ab698361cf23