10 megametres

Planets from Venus up to Uranus have diameters from ten to one hundred million metres. Top row: Uranus (left), Neptune (right); middle row: Earth (left), Sirius B (center), and Venus (right), to scale.

To help compare different orders of magnitude, this page lists lengths starting at 10⁷ metres (10 megametres or 10,000 kilometres).

Distances shorter than 10⁷ metres

Conversions

10 megametres (10 Mm) is

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

Human-defined scales and structures

• 11.085 Mm — Length of the Kiev-Vladivostok railway, a longer variant of the Trans-Siberian railway
• 13.300 Mm — Length of roads being rehabilitated and widened under the National Highway Development Project (launched in 1998) in India
• 39.000 Mm — Length of the SEA-ME-WE 3 optical submarine telecommunications cable, joining 39 points between Norden, Germany and Okinawa, Japan
• 67.000 Mm — Total length of National Highways in India

Geographical

• 10 Mm — Approximate altitude of the outer boundary of the exosphere
• 10.001 Mm — Length of the meridian arc from the North Pole to the Equator (the original definition of the metre was based on this length).
• 60.000 Mm — Total length of the mid-ocean ridges

Astronomical

• 12.000 Mm — Diameter of Sirius B, a white dwarf
• 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

Distances longer than 10⁸ m