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The 24 Aqr triple system: A closer look at its unique high-eccentricity hierarchical architecture

Solar and Stellar Astrophysics 2025-12-30 v1

Abstract

As its periastron passage occurred during the third quarter of 2020, system 24 Aqr is of particular significance. New visual solutions for the latest speckle interferometry observations collected by the Lowell Discovery Telescope (LTD) with its new QWSSI speckle camera are presented here. A variety of techniques were used to analyze the system, including ORBITX code for orbital solution, Al-Wardat's method for analyzing multiple stellar systems, and Edwards' method for analyzing visual and spectroscopic binaries. We derive precise masses and the complete set of its fundamental parameters for the three components, and we introduce a new orbital solution, and a new dynamical parallax, which is very close to the measured value given by Hipparcos 2007 and from that of Gaia DR2. In the next section, we discuss the possibility of a coplanar orbit. In conclusion, we demonstrate that we need a 65-m telescope to resolve the inner binary visually, although an array of telescopes could be used instead.

Keywords

Cite

@article{arxiv.2512.23645,
  title  = {The 24 Aqr triple system: A closer look at its unique high-eccentricity hierarchical architecture},
  author = {Ahmad Abushattal and Mashhoor A. Al-Wardat and Elliott P. Horch and Nikolaos Georgakarakos and Hatem A. Al-Ameryeen and Enas M. Abu-Alrob and Abdallah M. Hussein},
  journal= {arXiv preprint arXiv:2512.23645},
  year   = {2025}
}

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Published in Advances in Space Research