Edge Rewrite
// HTMLRewriter · presentation

This page was redesigned at the edge.

Cloudflare fetched the original article and streamed it through HTMLRewriter to apply an entirely new visual system without rebuilding the source page.

// request.cf · coarse context

A page that knows where it met you.

Only coarse request metadata is shown. This demo does not display or persist visitor IP addresses.

Country
US
Cloudflare location
CMH
Connection
HTTP/2
Language
Not provided

Ray ID: a2943d89aafebdc9

Jump to content

// Workers AI · dad joke modeWhy Perkin crater so popular? It's a hole lot of fun.

Perkin
LRO image
Coordinates47°01′N 175°44′E / 47.02°N 175.73°E / 47.02; 175.73
Diameter62.48 km (38.82 mi)
DepthUnknown
Colongitude177° at sunrise
EponymRichard S. Perkin
Oblique Lunar Orbiter 5 image, facing west

Perkin is a lunar impact crater that is located in the northern hemisphere on the Moon's far side.[1] Immediately to the north is the larger crater Debye. Just to the southeast is the somewhat smaller cater Guillaume, and to the west-southwest lies Dunér. To the northwest of Perkin is the large walled plain called D'Alembert.

This is a worn and eroded crater formation with an outer rim that has been reshaped by several subsequent impacts. Laid along the inner wall to the east-northeast is a small crater. Small craterlets lie along the southern inner wall and the northwestern rim. Several smaller craterlets cut across the rim along the southwest and north.

Prior to formal naming by the IAU in 1970,[2] Perkin was called Crater 72.[3]

References

[edit]
  1. Moore, Patrick (2000). The Data Book of Astronomy. CRC Press. p. 70. ISBN 978-1-4200-3344-1.
  2. Perkin, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN)
  3. Lunar Farside Chart (LFC-1A), 2nd Edition October 1967

Sources

[edit]