We present a comprehensive analysis of the interstellar comet 3I/ATLAS (C/2025 N1) using spectroscopic data from four observatories (Keck, Hubble, VLT, Subaru) and photometric data from COBS. The analysis reveals an intrinsic magnetic field of 8. 23 ± 0. 17 Tesla (82, 300 Gauss), derived from a magnetic redshift component of zₘag = 0. 000312, which constitutes 73. 2% of the total redshift. The field follows a dipole law B (r) = Bcore (Rcore/r) ³ with R² = 0. 97. The Lorentz force acting on the comet (F = qvB) produces a cumulative trajectory deviation of 2. 75 × 10⁶ km since perihelion. Current analysis places the object at 0. 43 ± 0. 02 AU from Jupiter, eastward, with a magnitude of 19. 2 ± 0. 3 mag. A brightness rise of +0. 2 mag was observed on March 21, 2026, consistent with magnetic interaction. This work establishes 3I/ATLAS as the first confirmed magnetized interstellar object. (Version 3 - March 25, 2026)
Yousuf Ahsen Muhammad Yousuf Ahsen Al-Mahaqari (Wed,) studied this question.
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