Maffra
AU19810415_A15 April 1981·Maffra
Reported 15 April 1981 at Maffra. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 15 April 1981 (day precision)
- place
- Maffra
Australia - 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
- -37.971320, 146.983660
- 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 no diagram published by cropcirclecenter (plain circle placeholder) |
cropcirclecenter.com / Bertold Zugelder | site default | 575×415 32.4 KiB image/jpeg |
image c782665e5c68 | https://www.cropcirclecenter.com/date/1981/198104.html |
Date
15 April 1981, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 15 April 1981
- weekday
- Wednesday, day 105 of the year, ISO week 16, spring
- sun and moon
- 25.8 days after the March equinox; moon waxing gibbous (87% lit), 3.8 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
- -37.971320, 146.983660 — place, ±2,000 m, by geonames, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Victoria | Australia | -37.971320, 146.983660 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 | AU19810415_A |
| name | Maffra |
| location | |
| county | Victoria |
| country | Australia |
| date reported | 1981-04-15 |
| date precision | day |
| crop | |
| size | |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1981/198104.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | no_formation_page |
| record | cc/58a83573cb627… raw record view: /formation/cc/58a83573cb627328dbb0bcd79e771c50b3bdc9e09a9bd2e9f9717e5abfa0135b 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 c782665e (placeholder: digest) | ≈ continuous (concentric circles) | 1 | 1 | 0.996 | 1.0049 |
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 c782665e— 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
- US19810333_A March 1981
- next
- CA19810515_A 15 May 1981
- previous in AU
- Tully 20 February 1981
- next in AU
- Woodford 1982
- 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.
Heyfield
17.4 km away, 1968-05-02
Rosedale30 September 1980Rosedale
26.6 km away, 1980-09-30
Slaty Creek Road26 December 1977Slaty Creek Road
116.3 km away, 1977-12-26
Narre Warren North8 August 1993Narre Warren North
146.1 km away, 1993-08-08 Clayton1966
Clayton
163.8 km away, 1966
Melbourne18 December 1997Melbourne
178.1 km away, 1997-12-18
- 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/AU19810415_A.json · row in index/manifest.jsonl
- input digests
- entity 451092016302 · images afe2570b1c43 · texts 4f53cda18c2b · geo 8e7e1cbf0e67