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- W3049276579 abstract "Abstract We present the first optical observations taken to characterize the near-Earth object 138175 (2000 EE104). This body is associated with interplanetary field enhancements (IFEs), thought to be caused by interactions between the solar wind magnetic field and solid material trailing in the orbit of the parent body. Based on optical photometry, the radius (in meters) and mass (in kilograms) of an equal-area sphere are found to be <?CDATA ${r}_{n}=250{(0.1/{p}_{R})}^{1/2}$?> and <?CDATA ${M}_{n}={10}^{11}{(0.1/{p}_{R})}^{3/2}$?> , respectively, where p R is the red geometric albedo and a density of ρ = 1500 kg m −3 is assumed. The measured colors are intermediate between those of C-type (primitive) and S-type (metamorphosed) asteroids but, with correction for the likely effects of phase reddening, are more consistent with a C-type classification than with S-type. No evidence for co-moving companions larger than ∼40(0.1/ p R ) m in radius is found, and no dust particle trail is detected, setting a limit to the trail optical depth of τ ≤ 2 × 10 −9 . Consideration of the size distribution produced by impact pulverization makes it difficult to generate the mass of nanodust (minimum 10 5 –10 6 kg) required to account for IFEs, unless the size distribution is unusually steep. Furthermore, impact pulverization timescales for source objects of the required size are much longer than the dynamical timescale. While the new optical data do not definitively refute the hypothesis that boulder pulverization is the source of IFEs, neither do they provide any support for it." @default.
- W3049276579 created "2020-08-21" @default.
- W3049276579 creator A5002964428 @default.
- W3049276579 date "2020-08-14" @default.
- W3049276579 modified "2023-09-27" @default.
- W3049276579 title "138175 (2000 EE104) and the Source of Interplanetary Field Enhancements" @default.
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- W3049276579 doi "https://doi.org/10.3847/psj/aba68f" @default.
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