Article
Engineering, Aerospace
Nishanth Pushparaj, Nicola Baresi, Kento Ichinomiya, Yasuhiro Kawakatsu
Summary: This paper focuses on designing transfer trajectories between Quasi-Satellite Orbits (QSO) around Phobos and explores transfer strategies using horizontal bifurcated Multi-Revolution Periodic QSOs (MP-QSOs). It is found that transfers via MP-QSOs provide insights on minimum transfer speeds and parameters determining transfer costs, especially between different altitudes QSOs.
Article
Geosciences, Multidisciplinary
A. Deniau, Q. Nenon, N. Andre, C. Mazelle, A. Rahmati, C. M. Fowler, A. R. Poppe, J. P. McFadden, J. S. Halekas, E. Penou
Summary: Scientists have analyzed measurements from MAVEN's encounters with Phobos and found that the protons observed near the Martian moon do not come from backscattering by Phobos, but rather from other sources such as foreshock-shock foot protons and Martian exospheric pickup protons. These findings have implications for previous observations and future missions.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Q. Nenon, A. R. Poppe, A. Rahmati, J. P. McFadden
Summary: The escaping ions from Mars's atmosphere impact its moon Phobos asymmetrically, leading to differences in flux distribution and accelerated weathering. This may provide valuable information for future sample return missions.
Article
Geosciences, Multidisciplinary
N. Mueller, S. Piqueux, M. Lemmon, J. Maki, R. D. Lorenz, M. Grott, T. Spohn, S. E. Smrekar, J. Knollenberg, T. L. Hudson, C. Krause, E. Millour, F. Forget, M. Golombek, A. Hagermann, N. Attree, M. Siegler, W. B. Banerdt
Summary: The study utilized Martian surface temperature response to Phobos transits to constrain the thermal properties of the uppermost layer of regolith. By modeling and varying parameters, a thermal inertia of 103-16+22Jm-2K-1s-1/2 in the top layer of 0.2-4 mm was derived, indicating smaller thermal properties compared to the diurnal temperature curve.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Engineering, Aerospace
Nicola Baresi, Diogene A. Dei Tos, Hitoshi Ikeda, Yasuhiro Kawakatsu
Summary: The Martian Moons eXploration mission aims to retrieve samples from the surface of Phobos, with the spacecraft planned to enter quasi-satellite orbits upon arrival for over three years of study. The paper presents the orbit design and maintenance strategy within the framework of the elliptic Hill problem, including numerical continuation procedures and sensitivity analyses to ensure the robustness of the mission trajectories.
JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
(2021)
Article
Astronomy & Astrophysics
Timothee Vaillant, Alexandre C. M. Correia
Summary: In this paper, we study the effects of secular resonances on the orbit of a satellite, particularly eviction resonances, which can significantly modify the eccentricity and inclination of the satellite. We estimate the impact of resonance crossing on the satellite's orbit, including capture probabilities, based on several parameters. Additionally, we use frequency map analysis to study resonant dynamics and find that some secular resonances may overlap, leading to chaotic motion for the satellite's inclination.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
L. Pou, F. Nimmo, P. Lognonne, D. Mimoun, R. F. Garcia, B. Pinot, A. Rivoldini, D. Banfield, W. B. Banerdt
Summary: The study utilizes the tidal response caused by Phobos and Deimos to analyze the interior structure of Mars through the InSight mission's seismometer. Simulation research shows that by recovering the gravimetric factors, the state and size of the Martian core can be constrained with an accuracy of 125 km within two years.
EARTH AND SPACE SCIENCE
(2021)
Article
Multidisciplinary Sciences
Jian-Yang Li, Masatoshi Hirabayashi, Tony L. Farnham, Jessica M. Sunshine, Matthew M. Knight, Gonzalo Tancredi, Fernando Moreno, Brian Murphy, Cyrielle Opitom, Steve Chesley, Daniel J. Scheeres, Cristina A. Thomas, Eugene G. Fahnestock, Andrew F. Cheng, Linda Dressel, Carolyn M. Ernst, Fabio Ferrari, Alan Fitzsimmons, Simone Ieva, Stavro L. Ivanovski, Theodore Kareta, Ludmilla Kolokolova, Tim Lister, Sabina D. Raducan, Andrew S. Rivkin, Alessandro Rossi, Stefania Soldini, Angela M. Stickle, Alison Vick, Jean-Baptiste Vincent, Harold A. Weaver, Stefano Bagnulo, Michele T. Bannister, Saverio Cambioni, Adriano Campo Bagatin, Nancy L. Chabot, Gabriele Cremonese, R. Terik Daly, Elisabetta Dotto, David A. Glenar, Mikael Granvik, Pedro H. Hasselmann, Isabel Herreros, Seth Jacobson, Martin Jutzi, Tomas Kohout, Fiorangela La Forgia, Monica Lazzarin, Zhong-Yi Lin, Ramin Lolachi, Alice Lucchetti, Rahil Makadia, Elena Mazzotta Epifani, Patrick Michel, Alessandra Migliorini, Nicholas A. Moskovitz, Jens Ormo, Maurizio Pajola, Paul Sanchez, Stephen R. Schwartz, Colin Snodgrass, Jordan Steckloff, Timothy J. Stubbs, Josep M. Trigo-Rodriguez
Summary: This study used the Hubble Space Telescope to observe the evolution of the DART impact ejecta from 15 minutes to 18.5 days, revealing that the ejecta initially are dominated by gravitational interaction and later driven by solar radiation pressure, forming a sustained tail consistent with previously observed asteroid tails. This provides a framework for understanding the fundamental mechanisms of asteroids disrupted by impacts.
Article
Astronomy & Astrophysics
A. Wargnier, T. Gautier, O. Poch, P. Beck, E. Quirico, A. Buch, T. Drant, Z. Perrin, A. Doressoundiram
Summary: The Martian Moon eXploration mission by JAXA aims to explore Phobos and Deimos and understand their origins. In this study, the detectability of organics on Phobos was investigated using laboratory spectral analogues. The results show that organic compounds can be detected on Phobos when their volume content exceeds 5%. These findings will be useful for interpreting the data collected by the MMX Infrared Spectrometer (MIRS) onboard the spacecraft.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Geosciences, Multidisciplinary
XiangYu Xi, Min Ding, MengHua Zhu
Summary: This study investigates the formation mechanisms of the linear grooves on the surface of Phobos using numerical simulations. The results suggest that the orbital ejecta from the Stickney crater may be responsible for the observed grooves on Phobos in a specific region.
EARTH AND PLANETARY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Joseph M. Boyce, Peter J. Mouginis-Mark
Summary: This study conducted a detailed morphologic and morphometric analysis of the radial grooves on Martian layered ejecta, proposing three different categories of grooves in correlation with different types of ejecta craters. The findings suggest that the formation of these grooves is closely related to geological processes and eruption mechanisms.
Article
Astronomy & Astrophysics
X. Guo, J. G. Yan, X. Yang, L. Liu, Y. H. Chen, M. Ye, J. P. Barriot
Summary: Doppler radio tracking data from Tianwen-1, China's first Mars mission, can help estimate the gravity field of Phobos. By considering additional flybys of Phobos by Tianwen-1 and Mars Express spacecraft, a determination up to degree and order 3 is feasible, and possibly degree and order 5. The cases of homogeneous, core-dominated, and mantle-dominated Phobos are studied, with the mantle-dominated case being the easiest to detect, followed by homogeneous and core-dominated cases. Implications for modeling the internal structure of Phobos are also discussed.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Environmental Sciences
Zhen Zhong, Qilin Wen, Jianguo Yan, Lijun Pang
Summary: This study models the interior structure of Phobos and calculates its mean density and moment of inertia. The results suggest a core radius of around 8.2 km, a core density of approximately 2500 kg/m³, and an outer layer density of around 1400 kg/m³. The methodology can be applied to studying the interior structure of irregularly shaped asteroids.
Article
Multidisciplinary Sciences
Jiaqi Li, Caroline Beghein, Scott M. McLennan, Anna C. Horleston, Constantinos Charalambous, Quancheng Huang, Geraldine Zenhausern, Ebru Bozdag, W. T. Pike, Matthew Golombek, Vedran Lekic, Philippe Lognonne, W. Bruce Banerdt
Summary: The farthest marsquake recorded by the InSight seismometer occurred close to the western end of Valles Marineris. Seismic wave precursors have been identified on the seismogram, providing insights into the crustal structure around 4100-4500 km away from the landing site. A 20-km interface, similar to the one beneath the landing site, has been discovered at the bounce point between the lander and the marsquake.
NATURE COMMUNICATIONS
(2022)
Article
Astronomy & Astrophysics
Andrei A. Dmitrovskii, Amir Khan, Christian Boehm, Amirhossein Bagheri, Martin van Driel
Summary: Phobos is one of the two moons of Mars, and its interior structure and bulk composition remain unclear, which are crucial for solving the origin of the satellites. By constructing a series of internal models and relying on currently available geophysical data, we find that models with a density increase can be distinguished from other models.
Article
Engineering, Aerospace
Michael Nayak, Jaclyn Beck, Bogdan Udrea
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
(2015)
Article
Engineering, Aerospace
Michael Nayak, David Mauro, Jan Stupl, Jonathan Aziz, Anthony Colaprete, Andres Dono-Perez, Chad Frost, Jonas Jonsson, Chris McKay, Derek Sears, Michael Soulage, Jason Swenson, Fan Yang Yang
ADVANCES IN SPACE RESEARCH
(2016)
Article
Astronomy & Astrophysics
Michael Nayak, Francis Nimmo, Bogdan Udrea
Article
Astronomy & Astrophysics
Michael Nayak, Doug Hemingway, Ian Garrick-Bethell
Article
Astronomy & Astrophysics
Michael Nayak, Roxana Lupu, Mark S. Marley, Jonathan J. Fortney, Tyler Robinson, Nikole Lewis
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
(2017)
Article
Astronomy & Astrophysics
Michael Nayak
Proceedings Paper
Engineering, Aerospace
Bogdan Udrea, Mikey Nayak
2015 IEEE AEROSPACE CONFERENCE
(2015)
Proceedings Paper
Engineering, Aerospace
Michael Nayak, Jaclyn Beck, Bogdan Udrea
2013 IEEE AEROSPACE CONFERENCE
(2013)
Proceedings Paper
Engineering, Aerospace
Michael Nayak, Jaclyn Beck, Bogdan Udrea
2013 IEEE AEROSPACE CONFERENCE
(2013)
Proceedings Paper
Engineering, Aerospace
Michael V. Nayak
SPACEFLIGHT MECHANICS 2012
(2012)
Proceedings Paper
Engineering, Aerospace
Michael V. Nayak, Bogdan Udreat
SPACEFLIGHT MECHANICS 2012
(2012)