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To help compare different orders of magnitude, this page lists lengths starting at 10⁷ m (10 Mm or 10,000 km).

Distances shorter than 10⁷ m

[edit] Conversions

10 Mm is

• 6,215 miles.
• side of a square of area 100,000,000 km²
• radius of a circle of area 314,159,265 km²

[edit] Nature

• 10 Mm — Approximate altitude of the outer boundary of the exosphere
• 10.001 Mm — Length of the Meridian of Paris from the North Pole to the Equator (the original definition of the metre was based on this length).
• 15.134 Mm — Coastline of New Zealand
• 19.924 Mm — Coastline of the United States
• 21.925 Mm — Coastline of Norway
• 25.760 Mm — Coastline of Australia
• 40.000 Mm — Coastline of Finland (including islands) [1]
• 60.000 Mm — Total length of the mid-ocean ridges

[edit] Astronomical

Uranus (left), Neptune (right), Sirius B (lower center), Earth (lower left), and Venus (lower right), to scale.

• 12.000 Mm — Diameter of Sirius B, a white dwarf^[1]
• 12.104 Mm — Diameter of Venus
• 12.742 Mm — Diameter of Earth
• 12.900 Mm — Minimum distance of the meteoroid 2004 FU₁₆₂ from the center of Earth on March 31, 2004, closest on record
• 14.000 Mm — Smallest diameter of Jupiter's Great Red Spot
• 34.770 Mm — Minimum distance of the asteroid 99942 Apophis on April 13, 2029 from the center of Earth
• 35.786 Mm — Altitude of geostationary orbit
• 40.005 Mm — Polar circumference of the Earth
• 40.077 Mm — Equatorial circumference of the Earth
• 49.528 Mm — Diameter of Neptune
• 51.118 Mm — Diameter of Uranus

[edit] Other

• 13.300 Mm - Length of roads being rehabilitated and widened under the National Highway Development Project (launched in 1998) in India.
• 67.000 Mm - Total length of national highways in India.

Distances longer than 10⁸ m

[edit] See also

• Orders of magnitude (length)

[edit] Notes