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List of Mars-crossing minor planets

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A Mars-crossing asteroid (MCA, also Mars-crosser, MC) is an asteroid whose orbit crosses that of Mars. Some Mars-crossers numbered below 100000 are listed here. They include the two numbered Mars trojans 5261 Eureka and .

Many databases, for instance the JPL Small-Body Database (JPL SBDB), only list asteroids with a perihelion greater than 1.3 AU as Mars-crossers. An asteroid with a perihelion less than this is classed as a near-Earth object even though it is crossing the orbit of Mars as well as crossing (or coming near to) that of Earth. Nevertheless, these objects are listed on this page. A grazer is an object with a perihelion below the aphelion of Mars (1.67 AU) but above the Martian perihelion (1.38 AU). The JPL SBDB lists 13,500 Mars-crossing asteroids. Only 18 MCAs are brighter than absolute magnitude (H) 12.5, which typically makes these asteroids with H

Earth having more gravity and surface area than Mars attracts more impactors than Mars. Earth is impacted about 20 times more than the Moon, and Mars only gets impacted about 3 to 5 times more than the Moon.

Co-orbital

** (leading cloud):**

** (trailing cloud):**

Candidates

Inner grazers

Inner grazers that are also [[Earth-crosser asteroid|Earth-crossers or grazers]]

Mars-crossers that are also [[Earth-crosser asteroid|Earth-crossers or grazers]]

These objects are not catalogued as Mars-crossers in databases such as the Jet Propulsion Laboratory's online Small-body Database Browser. Instead, they are categorized as Near Earth Objects (NEOs).

Outer grazers

Mars-crossers

References

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|access-date = 25 September 2021}}

References

  1. "Mars crosser", Encyclopædia Britannica, (2009), [https://www.britannica.com/EBchecked/topic/366405/Mars-crosser retrieved online] May 3, 2009.
  2. [https://www.nasa.gov/feature/goddard/2019/scientists-find-increase-in-asteroid-impacts-on-ancient-earth-by-studying-the-moon NASA's Moon Data Sheds Light on Earth’s Asteroid Impact History]
  3. [http://redplanet.asu.edu/?p=597 How often does Mars get whacked?]
  4. [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=6386 6386 Keithnoll at the JPL Small-Body Database Browser]
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