100 petametres

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1 E6 m - Click on the relevant thumbnail image to jump to the desired order of length magnitude: left is 1e6m, right is 1e13m. Click on information icon bottom-left for description of image. 1 E7 m 1 E8 m 1 E9 m 1 E10 m 1 E11 m 1 E12 m 1 E13 m 1 E14 m 1 E15 m 1 E16 m 1 E17 m
Click on the thumbnail image to jump to the desired order of length magnitude: top-left is 1e6m, lower-right is 1e17m. (Image description)
Lengths with order of magnitude 1e17m: yellow Vernal Point arrow traces hundred light year radius circle with smaller ten light year circle at right; globular cluster Messier 5 in background; 12 light year radius Orion Nebula middle right; 50 light year wide view of the Carina Nebula bottom left; Pleiades cluster and Bubble nebula with similar diameters each around 10 light years bottom right; grey arrows show distances from Sun to stars Aldebaran (65 light years) and Vega (25 light years).

To help compare different distances this page lists lengths between 1017 m (100 Pm or 11 light years) and 1018 m (106 light years).

Distances shorter than 100 Pm

  • 110 Pm — 12 light years — Distance to Tau Ceti
  • 240 Pm — 25 light years — Distance to Vega
  • 260 Pm — 27 light years — Distance to Chara, a star approximately as bright as our Sun. Its faintness gives us an idea how our Sun would appear when viewed from even so close a distance as this.
  • 350 Pm — 24 light years — Diameter of the Orion Nebula[1][2]
  • 350 Pm — 37 light years — Distance to Arcturus
  • 400 Pm — 42 light years — Distance to Capella
  • 620 Pm — 65 light years — Distance to Aldebaran

Distances longer than 1 Em

See also[edit]


  1. ^ Sandstrom, Karin M; Peek, J. E. G.; Bower, Geoffrey C.; Bolatto, Alberto D.; Plambeck, Richard L. (1999). "A Parallactic Distance of 389+24
    parsecs to the Orion Nebula Cluster from Very Long Baseline Array Observations". The Astrophysical Journal 667 (2): 1161–1169. arXiv:0706.2361. Bibcode:2007ApJ...667.1161S. doi:10.1086/520922.
  2. ^ diameter=sin(65 arcminutes)*1270 light years=24; where "65.00 x 60.0 (arcmin)" sourced from Revised NGC Data for NGC 1976 per Wolfgang Steinicke's NGC/IC Database Files[dead link]