Didymos

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The asteroid Didymos and its smaller, satellite asteroid Dimorphos comprise a binary asteroid system within the solar system. Didymos was discovered in 1996, and is estimated to contain roughly 99% of the mass of the Didymos-Dimorphos system.[1][2]

Properties

Didymos has a mass of 500 to 600 billion kilograms. It is roughly spherical in shape, with an approximate diameter of 780 meters (slightly less than half a mile), and rotates once about its axis about every 2.3 hours.

Didymos orbits the Sun in an elliptical orbit, with a nearest and farthest distance from the sun of about 1 AU and about 2.3 AU, respectively. It orbits the Sun every 2.1 years.

References

  1. ↑ Didymos via NASA Science SOLAR SYSTEM EXPLORATION.
  2. ↑ Johnston, Wm. Robert. "(65803) Didymos and Dimorphos" Oct 9, 2021. Johnston's Archive.
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