Binary minor planet | Wikipedia audio article
Channel: wikipedia tts
Date: 02/06/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Minor-planet_moon


00:01:30 1 Terminology
00:02:52 2 Discovery milestones
00:04:57 2.1 Triple systems
00:06:40 3 Commonality
00:08:21 4 Origin
00:09:57 5 Populations and classes
00:13:25 6 List
00:13:48 6.1 Near-Earth objects
00:14:13 6.2 Mars crossers
00:14:38 6.3 Main-belt asteroids
00:15:26 6.4 Jupiter trojans
00:15:51 6.5 Centaurs
00:16:12 6.6 Trans-Neptunian objects
00:16:42 7 See also



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SUMMARY
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A minor-planet moon is an astronomical object that orbits a minor planet as its natural satellite. As of February 2019, there are 352 minor planets known or suspected to have moons. Discoveries of minor-planet moons (and binary objects, in general) are important because the determination of their orbits provides estimates on the mass and density of the primary, allowing insights of their physical properties that is generally not otherwise possible.The first modern era mention of the possibility of an asteroid satellite was in connection with an occultation of the bright star Gamma Ceti by the asteroid 6 Hebe in 1977. The observer, amateur astronomer Paul D. Maley, detected an unmistakable 0.5 second disappearance of this naked eye star from a site near Victoria, Texas. Many hours later, several observations were reported in Mexico attributed to the occultation by 6 Hebe itself. Although not confirmed, this documents the first formally documented case of a suspected companion of an asteroid.