10 megametres

Click on the thumbnail image to jump to the desired order of length magnitude: top-left is 1e6m, lower-right is 1e17m. (Image description)

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^[1]
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^[2]
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

References

↑ CIS railway timetable, route No. 350, Kiev-Vladivostok. Archived 2009-12-03.
↑ McGourty, Christine (2005-12-14). "Hubble finds mass of white dwarf". BBC News. Retrieved 2007-10-13.

Orders of magnitude for length by powers of 10

One metre (10⁰) and shorter	< −12 −12 −11 −10 −9 −8 −7 −6 −5 −4 −3 −2 −1 0

Longer than one metre	1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 <

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