The following tables list all minor planets and comets that have been visited by robotic spacecraft.
List of minor planets visited by spacecraft.
A total of 18 minor planets (asteroids, dwarf planets, and Kuiper belt objects) have been visited by space probes. Moons (not directly orbiting the Sun) and planets are not minor planets and thus are not included in the table below.
Incidental flybys.
In addition to the above listed objects, three asteroids have been imaged by spacecraft at distances too large to resolve features (over 100,000 km).
List of comets visited by spacecraft.
Spacecraft visited by comets.
Comet C/2013 A1 passed close by planet Mars in October 2014, closer than the Moon is to Earth. As of early 2014 it was calculated to pass as close as . This was so close that the event was deemed dangerous to spacecraft in orbit around Mars. Spacecraft that were active at that time included "2001 Mars Odyssey", "Mars Express", MAVEN, Mars Orbiter Mission, and "Mars Reconnaissance Orbiter" in Mars orbit – and two on the surface – Mars Exploration Rover" Opportunity" and the Mars Science Laboratory "Curiosity".
Future visits.
Planned.
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Proposals.
The following table lists minor planets that are proposed to be visited by spacecraft missions that have not yet been approved.
Past proposals.
Failed missions.
Former targets for launched spacecraft.
References.
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