Tootfinder

A dynamical coherency gate for state recovery: Statistical requiem for the long arc of cislunar orbital mis-prediction
Binyamin Stivi, Vishnuu Mallik, Lamberto Dell'Elce, Aaron J. Rosengren
https://arxiv.org/abs/2506.22748

A dynamical coherency gate for state recovery: Statistical requiem for the long arc of cislunar orbital mis-prediction
We present a statistically grounded methodology for recovering physically consistent initial conditions from historical two-line element sets (TLEs), enabling accurate long-arc trajectory reconstruction for distant and highly eccentric Earth satellites. The approach combines numerical averaging of osculating orbital elements with Gaussian-mixture-model (GMM) filtering with robust fallback strategies to isolate a dynamically coherent subset of mean elements at a common reference epoch. From this…

Optimal Impulsive Control of Cislunar Relative Motion using Reachable Set Theory
Matthew Hunter, Walter J. Manuel, Simone D'Amico
https://arxiv.org/abs/2507.21425 https://…

Optimal Impulsive Control of Cislunar Relative Motion using Reachable Set Theory
This work presents the first application of the state-of-the-art Koenig-D'Amico reachable set theory solver to cislunar, chaotic relative motion in the Circular-Restricted Three-Body Problem (CR3BP). The relative motion dynamics of two spacecraft, a chief and a deputy, in the CR3BP are formulated as a Linear Time-Variant (LTV) system, allowing the solver to find an optimal impulsive control maneuver plan. This methodology demonstrates robust and accurate control performance for both small and l…

High-Precision Relativistic Time Scales for Cislunar Navigation
Slava G. Turyshev
https://arxiv.org/abs/2507.22145 https://arxiv.org/pdf/2507.22145

High-Precision Relativistic Time Scales for Cislunar Navigation
We present a unified post-Newtonian framework for relativistic timing and coordinate transformations covering six time scales (TCB, TCG, TT, TDB, TCL, TL) and three reference systems (BCRS, GCRS, LCRS). Extending the IAU conventions, we define a Lunicentric Celestial Reference System (LCRS) metric that retains all contributions above a fractional threshold of 5x10^{-18} and timing terms above 0.1 ps by expanding the lunar gravity field to spherical-harmonic degree l=9 with Love number variation…

Ping #BahnBubble: What kind of rolling stock are "#EuroCity" trains operated by #Trenitalia entirely *inside* Italy? Like EC141 Milano Centrale 10:05–Venezia Santa Lucia 12:42.

Differential Corrections Algorithm for Initial Orbit Determination in the Cislunar Region using Angle-Only Measurements
Seur Gi Jo, Brian Baker-McEvilly, David Canales
https://arxiv.org/abs/2507.22350 …

A comparative study of time on Mars with lunar and terrestrial clocks
Neil Ashby, Bijunath R. Patla
https://arxiv.org/abs/2507.21388 https://arxiv.org/pdf/…

A comparative study of time on Mars with lunar and terrestrial clocks
As space exploration extends into cislunar space and further towards Mars, understanding the relativistic effects on clocks on Mars, particularly in relation to multibody gravitational influences, becomes increasingly important for accurate clock synchronization. This study estimates clock rates on Mars and compares them to those on the Moon and Earth. We find that, on average, clocks on Mars tick faster than those on the Earth's geoid by 477 microseconds per day, with a variation of 226 micros…

Lunar Reference Timescale
Adrien Bourgoin (LTE, Observatoire de Paris, Universit\'e PSL, CNRS, Sorbonne Universit\'e, LNE, Paris, France), Pascale Defraigne (Royal Observatory of Belgium, Brussels, Belgium), Fr\'ed\'eric Meynadier (Time Department, BIPM, Pavillon de Breteuil, S\`evres, France)
https://arxiv.org/abs/2507.215…

Lunar Reference Timescale
Setting up a relativistic lunar reference frame is of a prime importance in the context of future exploration missions to the Moon. If the procedure for building a consistent reference frame within the framework of the general theory of relativity is well established (cf. resolutions B.3 of IAU 2000), there is still some freedom in the choice of the coordinate timescale to be adopted as reference in the cislunar region. In this paper, we review the orders of magnitude of the relativistic effect…

Advancing Lunar Communication through Inter-domain Space Networks and Dynamic Orchestration
Selen Gecgel Cetin, Baris Donmez, Gunes Karabulut Kurt
https://arxiv.org/abs/2507.15483

Advancing Lunar Communication through Inter-domain Space Networks and Dynamic Orchestration
The reawakened era of lunar exploration is defined by a strategic shift from temporary visits to a sustained international and commercial presence, resulting in an unprecedented demand for a robust and continuously available communication infrastructure. The conventional direct-to-Earth communication architecture relies on limited and oversubscribed deep space networks, which are further challenged by the radiative environment and insufficient visibility in certain areas of the cislunar domain.…

This https://arxiv.org/abs/2502.01907 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Robust Cislunar Low-Thrust Trajectory Optimization under Uncertainties via Sequential Covariance Steering
Spacecraft operations are influenced by uncertainties such as dynamics modeling, navigation, and maneuver execution errors. Although mission design has traditionally incorporated heuristic safety margins to mitigate the effect of uncertainties, particularly before/after crucial events, it is yet unclear whether this practice will scale in the cislunar region, which features locally chaotic nonlinear dynamics and involves frequent lunar flybys. This paper applies chance-constrained covariance st…