3 papers
astro-ph.EP2026
Systematic and Statistical Uncertainties in the Non-Gravitational Acceleration of 3I/ATLAS
F. Spada, M. Królikowska, M. Królikowska +1
We present a detailed analysis of the trajectory of interstellar comet 3I/ATLAS, with emphasis on the determination of its non-gravitational acceleration (NGA) parameters and their…
astro-ph.SR2025
Four ages of rotating stars in the rotation--activity relationship and gyrochronology
Huiqin Yang, Jifeng Liu, Roberto Soria +4
Gyrochronology and the rotation--activity relationship are standard techniques used to determine the evolution phase.The mismatch in the definition of the evolutionary phases has s…
astro-ph.EP2025
"Dark comet" 2005 VL is unlikely to be the lost Soviet-era probe Venera 2
Federico Spada
Loeb & Cloete (2025) intriguingly suggest that the near-Earth object 2005 VL could be the lost Soviet probe Venera 2. Here I evaluate the plausibility of such a claim against t…