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Scattering And Absorption of Light in Planetary Regoliths
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Earth's Trojan asteroid.

Martin Connors1, Paul Wiegert, Christian Veillet

  • 1Athabasca University, 1 University Drive, Athabasca, Alberta T9S 3A3, Canada. martinc@athabascau.ca

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|July 29, 2011
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Summary
This summary is machine-generated.

Astronomers discovered Earth's first Trojan asteroid, 2010 TK(7), co-orbiting with our planet. This asteroid resides near a stable Lagrange point, marking a significant find in celestial mechanics.

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Area of Science:

  • Astronomy and astrophysics
  • Celestial mechanics
  • Solar system exploration

Background:

  • Planetary bodies can share orbits via Trojan points, stable locations 60° ahead or behind a planet.
  • Trojan asteroids are known for Jupiter, Mars, and Neptune, but not Earth due to detection challenges.

Purpose of the Study:

  • To identify potential Earth-co-orbiting Trojan asteroids.
  • To confirm the existence and orbital characteristics of a candidate Earth Trojan.

Main Methods:

  • Archival search of infrared astronomical data for co-orbital bodies.
  • Optical observations to confirm the orbit of candidate 2010 TK(7).

Main Results:

  • Identification of 2010 TK(7) as a candidate Earth Trojan from infrared data.
  • Confirmation of 2010 TK(7) as a stable Trojan companion librating around the L(4) Lagrange point.
  • Orbital stability of 2010 TK(7) projected for at least 10,000 years.

Conclusions:

  • The first Earth Trojan asteroid, 2010 TK(7), has been discovered.
  • Earth hosts Trojan asteroids, similar to other giant planets.
  • The discovery opens new avenues for studying co-orbital dynamics in our solar system.