ASTRON 101 Lecture Notes - Lecture 10: Amorphous Carbon, Solar Wind, Comet Nucleus
14 Aug 2018
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Document Summary
Reservoir of primitive, remnant material from the formation of the solar system. First object in kb was discovered in 1992. Predictions that this region should be mostly empty. Cover wide areas on the the sky to very faint levels. In search for objects beyond neptune"s orbit, the scientists excluded objects moving faster than 10 arcsecs/hour corresponding to saturn"s orbital speed (converted to arcsecs/hr from m/s). Kepler"s 2nd law would predict that these objects are orbiting the sun with smaller velocities than those of saturn. If large enough to settle into spheroid, then dwarf planet or plutoid . Kepler"s 3rd law: p = a p = a / . Pluto never gets too close to neptune to be scattered by gravity stable. Eccentric orbits bring these close to neptune. Scattered disk object or inner oort cloud object. Some, like halley"s comet return at regular intervals. Structure of comets only about 1 to 10 km wide)
