Results 1 to 10 of about 313 (213)
Dynamics in the Vicinity of the Stable Halo Orbits
Journal of the Astronautical Sciences, 2023 AbstractThis work presents a study of the dynamics in the vicinity of the stable L2 halo orbits in the Earth-Moon system of the circular restricted three-body problem. These solutions include partially elliptic, partially hyperbolic, and elliptic quasi-halo orbits.
Daniel Scheeres, David Lujan
exaly +3 more sources
Multi-orbit lunar GNSS constellation design with distant retrograde orbit and Halo orbit combination
Scientific Reports, 2023 The Moon is the closest natural satellite to mankind, with valuable resources on it, and is an important base station for mankind to enter deep space.
K Wang +6 more
doaj +3 more sources
THE UNORTHODOX ORBITS OF SUBSTRUCTURE HALOS [PDF]
The Astrophysical Journal, 2009 12 pages, 8 figures, ApJ in ...
Ludlow, A. +5 more
openaire +3 more sources
Navigation, 2022 A comprehensive study on the autonomous orbit determination (AOD) performance of satellite pairs in halo orbits and distant retrograde orbits (DROs) is carried out.
Zhao-Yang Gao, Xi-Yun Hou
doaj +1 more source
Homotopy-based optimal trajectory design to transfer from Earth orbit to halo orbits [PDF]
فصلنامه علوم و فناوری فضایی, 2020 Halo orbits are of importance for observation and study of the space due to their specific characteristics including the orbital position and the periodic motion.
Ghasem Heydari +3 more
doaj +1 more source
On the Orbits of Infalling Satellite Halos [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 The orbital properties of infalling satellite halos set the initial conditions which control the subsequent evolution of subhalos and the galaxies that they host, with implications for mass stripping, star formation quenching, and merging. Using a high-resolution, cosmological N-body simulation, I examine the orbital parameters of satellite halos as ...
openaire +5 more sources
International Journal of Aerospace Engineering, 2022 The cis-lunar space has been more and more attractive for human beings, and different kinds of missions have been proposed. For cis-lunar missions with long durations, the stationing-keeping is a pivotal problem.
Ruikang Zhang, Yue Wang
doaj +1 more source
A Tilt in the Dark Matter Halo of the Galaxy
The Astrophysical Journal, 2022 Recent observations of the stellar halo have uncovered the debris of an ancient merger, Gaia–Sausage–Enceladus (GSE), estimated to have occurred ≳8 Gyr ago.
Jiwon Jesse Han +11 more
doaj +1 more source
HALO7D. III. Chemical Abundances of Milky Way Halo Stars from Medium-resolution Spectra
The Astrophysical Journal, 2023 The Halo Assembly in Lambda Cold Dark Matter: Observations in 7 Dimensions (HALO7D) survey measures the kinematics and chemical properties of stars in the Milky Way (MW) stellar halo to learn about the formation of our Galaxy.
Kevin A. McKinnon +6 more
doaj +1 more source
Galactic Subsystems on the Basis of Cumulative Distribution of Space Velocities [PDF]
Serbian Astronomical Journal, 2008 A sample containing $4,614$ stars with available space velocities and high-quality kinematical data from the Arihip Catalogue is formed. For the purpose of distinguishing galactic subsystems the cumulative distribution of space velocities is studied ...
Vidojević, S., Ninković, S.
doaj +3 more sources