@Article{AraújoWintPrad:2015:StReOr,
author = "Ara{\'u}jo, R. A. N. and Winter, O. C. and Prado, Antonio
Fernando Bertachini de Almeida",
affiliation = "{Universidade Estadual Paulista (UNESP)} and {Universidade
Estadual Paulista (UNESP)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Stable retrograde orbits around the triple system 2001 SN263",
journal = "Monthly Notices of the Royal Astronomical Society",
year = "2015",
volume = "449",
number = "4",
pages = "4404--4414",
month = "June",
keywords = "celestial mechanics, minor planets, asteroids: general.",
abstract = "The near-Earth Asteroid 2001 SN263 is a triple system of asteroids
and it is the target of the ASTER mission - First Brazilian Deep
Space Mission. The announcement of this mission has motivated a
study aimed to characterize regions of stability of the system.
Araujo et al., characterized the stable regions around the
components of the triple system for the planar and prograde cases.
Through numerical integrations they found that the stable regions
are in two tiny internal zones, one of them placed very close to
Alpha and another close to Beta, and in the external region. For a
space mission aimed to place the probe in the internal region of
the system those results do not seem to be very interesting.
Therefore, knowing that the retrograde orbits are expected to be
more stable, here we present a complementary study. We now
considered particles orbiting the components of the system, in the
internal and external regions, with relative inclinations between
90 degrees < I <= 180 degrees, i.e. particles with retrograde
orbits. Our goal is to characterize the stable regions of the
system for retrograde orbits, and then detach a preferred region
to place the space probe. For a space mission, the most
interesting regions would be those that are unstable for the
prograde cases, but stable for the retrograde cases. Such
configuration provide a stable region to place the mission probe
with a relative retrograde orbit, and, at the same time,
guarantees a region free of debris since they are expected to have
prograde orbits. We found that in fact the internal and external
stable regions significantly increase when compared to the
prograde case. For particles with e = 0 and I = 180 degrees, we
found that nearly the whole region around Alpha and Beta remain
stable. We then identified three internal regions and one external
region that are very interesting to place the space probe. We
present the stable regions found for the retrograde case and a
discussion on those preferred regions. We also discuss the effects
of resonances of the particles with Beta and Gamma, and the role
of the Kozai mechanism in this scenario. These results help us
understand and characterize the stability of the triple system
2001 SN263 when retrograde orbits are considered, and provide
important parameters to the design of the ASTER mission.",
doi = "10.1093/mnras/stv592",
url = "http://dx.doi.org/10.1093/mnras/stv592",
issn = "0035-8711 and 1365-2966",
language = "en",
targetfile = "araujo_stable.pdf",
urlaccessdate = "27 abr. 2024"
}