Research output: Contribution to journal › Article › peer-review
Chaotic Zones around Rotating Small Bodies. / Lages, José; Shepelyansky, Dima L.; Shevchenko, Ivan I.
In: Astronomical Journal, Vol. 153, No. 6, 272, 01.06.2017.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Chaotic Zones around Rotating Small Bodies
AU - Lages, José
AU - Shepelyansky, Dima L.
AU - Shevchenko, Ivan I.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - Small bodies of the solar system, like asteroids, trans-Neptunian objects, cometary nuclei, and planetary satellites, with diameters smaller than 1000 km usually have irregular shapes, often resembling dumb-bells or contact binaries. The spinning of such a gravitating dumb-bell creates around it a zone of chaotic orbits. We determine its extent analytically and numerically. We find that the chaotic zone swells significantly if the rotation rate is decreased; in particular, the zone swells more than twice if the rotation rate is decreased 10 times with respect to the "centrifugal breakup" threshold. We illustrate the properties of the chaotic orbital zones in examples of the global orbital dynamics about asteroid 243 Ida (which has a moon, Dactyl, orbiting near the edge of the chaotic zone) and asteroid 25143 Itokawa.
AB - Small bodies of the solar system, like asteroids, trans-Neptunian objects, cometary nuclei, and planetary satellites, with diameters smaller than 1000 km usually have irregular shapes, often resembling dumb-bells or contact binaries. The spinning of such a gravitating dumb-bell creates around it a zone of chaotic orbits. We determine its extent analytically and numerically. We find that the chaotic zone swells significantly if the rotation rate is decreased; in particular, the zone swells more than twice if the rotation rate is decreased 10 times with respect to the "centrifugal breakup" threshold. We illustrate the properties of the chaotic orbital zones in examples of the global orbital dynamics about asteroid 243 Ida (which has a moon, Dactyl, orbiting near the edge of the chaotic zone) and asteroid 25143 Itokawa.
KW - celestial mechanics
KW - chaos
KW - comets: general
KW - minor planets, asteroids: general
KW - planets and satellites: dynamical evolution and stability
UR - http://www.scopus.com/inward/record.url?scp=85020916616&partnerID=8YFLogxK
U2 - 10.3847/1538-3881/aa7203
DO - 10.3847/1538-3881/aa7203
M3 - Article
AN - SCOPUS:85020916616
VL - 153
JO - Astronomical Journal
JF - Astronomical Journal
SN - 0004-6256
IS - 6
M1 - 272
ER -
ID: 45987117