100 kilometres

A clickable mosaic of objects
at scales within direct human experience, from the micrometric (106 m, top left) to the multi-kilometric (105 m, bottom right).
The Suez Canal is 163 kilometres long

A length of 100 kilometers (about 62 American miles), as a rough amount, is relatively common in measurements on Earth and for some astronomical objects. It is the altitude at which the FAI defines spaceflight to begin. To help compare orders of magnitude, this page lists lengths between 100 and 1,000 kilometres (105 and 106 metres).

Distances shorter than 100 kilometres

Conversions

A distance of 100 kilometres is equal to about 62 miles[1] (or 62.13711922 miles).

Human-defined scales and structures

Geographical

Astronomical

Distances longer than 100 kilometres

Notes

  1. The exact category (asteroid/dwarf planet/planet) to which particular solar system objects belong, has been subject to some revision since the discovery of extrasolar planets and trans-Neptunian objects

References

  1. Trueknowledge.com, 2010, webpage: "100 km"
  2. "High Speed 1 Project Hoem". www.betchel.com. Betchel Corporation. Retrieved 8 February 2015.
  3. Thomas, P. C.; Parker, J. Wm.; McFadden, L. A. et al. (2005). "Differentiation of the asteroid Ceres as revealed by its shape". Nature 437 (7056): 224226. Bibcode:2005Natur.437..224T. doi:10.1038/nature03938. PMID 16148926.