Silbury Hill

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)

diagram cropcirclecenter.com / Bertold Zugelder site default

Date

10 May 1989, to day precision. What a source records is the day a formation was found and reported.

reported by

cc: 10 May 1989

weekday

Wednesday, day 130 of the year, ISO week 19, spring

sun and moon

41.9 days before the June solstice; moon waxing crescent (30% lit), 10.3 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

51.415755, -1.857405 — place, ±2,000 m, by os_open_names, from the cc record

on a map

OpenStreetMap

Crop and size

crop

oilseed rape (cc: oilseed rape)

diameter

not recorded by any source

size as written

not recorded

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.

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.

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 0836a23a— 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

Gladestry April 1989, Gladestry

next

Heytesbury 15 May 1989, Heytesbury

previous in UK

Gladestry April 1989

next in UK

Heytesbury 15 May 1989

same day

Avebury Trusloe (Avebury Trusloe) · Avebury Trusloe (Avebury Trusloe)

within 7 days and 25 km

Avebury Trusloe 10 May 1989, 1.2 km away, 0 day(s) apart · Avebury Trusloe 10 May 1989, 1.2 km away, 0 day(s) apart · Beckhampton 17 May 1989, 1.2 km away, 7 day(s) apart · Beckhampton 17 May 1989, 1.2 km away, 7 day(s) apart

In place

The nearest formations the archive can place.

Silbury Hill15 July 1988
Silbury Hill
0 m away, 1988-07-15 Silbury Hill26 July 1988
Silbury Hill
0 m away, 1988-07-26 Silbury Hill30 July 1988
Silbury Hill
0 m away, 1988-07-30 Silbury Hill23 June 1989
Silbury Hill
0 m away, 1989-06-23 Silbury Hill28 June 1989
Silbury Hill
0 m away, 1989-06-28 Silbury Hill29 June 1989
Silbury Hill
0 m away, 1989-06-29

same county and year

Killeen Mor 9 August 1989 · Killeen Mor 9 August 1989 · Avebury Trusloe 10 May 1989 · Avebury Trusloe 10 May 1989 · Heytesbury 15 May 1989 · Beckhampton 17 May 1989 · Beckhampton 17 May 1989 · Beckhampton 28 May 1989 · Beckhampton 28 May 1989 · Whiteparish 28 May 1989 · Avebury Trusloe 29 May 1989 · Bratton 29 May 1989 · Bratton 29 May 1989 · Scratchbury Hill 2 June 1989 · Calstone Wellington 3 June 1989 · Heytesbury 4 June 1989 · Heytesbury 4 June 1989 · Heytesbury 4 June 1989 · Heytesbury 4 June 1989 · Winterbourne Stoke 10 June 1989 and 48 more

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/UK19890510_C.json · row in index/manifest.jsonl

input digests

entity 0ee45746f007 · images f14f1dd85587 · texts 4f53cda18c2b · geo 89a90ea459e4