IDing Meteorite Parent Bodies

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(Ab)Use of TaxonomyOriginal taxonomic group designations werebased on inferences about compositions:C = carbonaceousS = SilicaceousM = MetallicHowever, asteroid taxonomy is NOT, NOT,NOT a compositional classification.Asteroids of different taxonomic classes(e.g., a “C” object and an “S” object) arelikely to be composed of different materials.However, there is no assurance that twoasteroids of the same taxonomic type arecomposed of similar materials!
Identifying Asteroidal Parent Bodiesof MeteoritesThe high abundance of ordinary chondrites(OC) among meteorite falls led earlyinvestigators to conclude that they mustcome from an abundant asteroid type.The S-asteroids, which are the 2 nd mostcommon type in the inner belt, have surfacematerials composed of olivine, pyroxene +/-metal.This gross similarity to OC mineralogies ledmany to conclude that most S-asteroids wereordinary chondrites.
Page 3 and 4: Review of the Asteroid-MeteoriteCon
Page 5: Delivery StagesEjected from asteroi
Page 8 and 9: Secular Resonances (nu / ν )0.5nu(
Page 10 and 11: Getting to “Escape Hatches”Spre
Page 12 and 13: Yarkovsky Effect - IIEffect arises
Page 14 and 15: Net Effect Depends on Rotation Dire
Page 16 and 17: For given albedo and conductivity,
Page 18 and 19: Actual meteoroids will not always h
Page 20 and 21: Investigators initially assumed tha
Page 22 and 23: Asteroid Taxonomic TypesTholen (198
Page 26 and 27: Common CosmicMineralsIdentify the t
Page 28 and 29: Lunar Space Weathering ProcessesVap
Page 30 and 31: Spectral Alteration by Space Weathe
Page 32 and 33: Space Weathering BehaviorLuna, 433
Page 34 and 35: Relative Variations of Spectral Par
Page 36 and 37: Limitations of Spectral MatchingInc
Page 38 and 39: Curve MatchingInitially useful in c
Page 40 and 41: Effect of Space Weathering on Band
Page 42 and 43: Effect of Space Weathering on BandA
Page 44 and 45: A major part of the ordinary chondr
Page 46 and 47: Outward-bound Asteroid MissionDAWN-
Page 48 and 49: Bottom Line on Space Weathering and
Page 50 and 51: S-asteroid SubtypesBand I Center (
Page 52 and 53: So where do the OrdinaryChondrites
Page 54 and 55: Hebe is located near both the 3:1 a
Page 56 and 57: The spectral curve of Hebe is signi
Page 58 and 59: 6 Hebe as the Parent Body of the H-
Page 60 and 61: 44 NysaUnsampled Asteroids- Aubrite
Page 62: Meteorites as Parent Body SamplesTh

IDing Meteorite Parent Bodies

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