A

Adams, John Couch, 181 Adrastea, 107, 113 Aegaeon, 128 Airy, George B., 181 Alfven, Hannes, 216 Amalthea, 107, 111-112, 113 Ananke, 112

Arend-Roland comet, 222 Ariel, 158, 159, 161-162 asteroids

Ceres, 11, 21, 23, 31, 32, 35-36, 41, 42-44, 46-47, 180, 195

classification of, 25-26, 33-38 distinguished from comets, 30, 198 Eros, 38-39, 40, 44-45, 72-73 families, 27-30, 33 Geographos, 34-35, 45 Hermes, 45-46 Icarus, 46

Kirkwood gaps, 21, 22, 23-25, 60 measurement of, 31-33 and meteorites, 28, 72-73 near-Earth (NEA), 11, 25-27, 30, 31, 44 Pallas, 21, 23, 31, 32, 35, 36, 46 Vesta, 21, 28, 31, 32, 34, 35, 36, 38, 41, 44, 46-47, 60, 68, 73 Atlas, 128, 131

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