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- W3011817400 abstract "We showed that similar-mass and non-destructive impacts can produce extremely elongated shapes of asteroids. Recently an interstellar object 1I/‘Oumuamua was discovered, and its light curve shows that 1I/‘Oumuamua has the size of about 100 m and an extremely elongated shape with the ratio of intermediate to major axis lengths less than 0.3. In this chapter, we introduce results of our simulations that investigate detailed impact conditions to form such extremely elongated object. The results show that the collisional formation of the extremely elongated shape requires impact velocities less than 40 cm/s, impact angles less than 30 degrees, ratios of impactor mass to target mass larger than 0.5, and friction angles of granular material composing impacting objects larger than 40 degrees. Such low impact velocities are realized in extremely young protoplanetary disks without planetesimals larger than 7 km. Thus, we suggest that 1I/‘Oumuamua came to our solar system from such an extremely young protoplanetary disk." @default.
- W3011817400 created "2020-03-23" @default.
- W3011817400 creator A5034929598 @default.
- W3011817400 date "2020-01-01" @default.
- W3011817400 modified "2023-09-25" @default.
- W3011817400 title "Application: Extremely Elongated Shape Of 1I/‘Oumuamua" @default.
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- W3011817400 doi "https://doi.org/10.1007/978-981-15-3722-6_5" @default.
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