Tracking the Activity of the Interstellar Object 3I/ATLAS through Its Perihelion

Abstract In order to facilitate interplanetary spacecraft observations of 3I/ATLAS, we have monitored and predicted the optical properties of its coma using both ground and space-based observations. Here, we describe how the data from space-based solar coronagraphs and the Polarimeter to Unify the Corona and Heliosphere mission enabled tracking of 3I/ATLAS’s optical magnitude throughout its entire perihelion passage, including the period between 2025 October 8 and 30, when it was not visible from Earth.

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Publication Details

Journal
Research Notes of the AAS
Published
2025-11-27
DOI
https://doi.org/10.3847/2515-5172/ae23c8
Citations
1
Primary Topic
Gamma-ray bursts and supernovae
Type
article
Field-Weighted Citation Impact
1.15
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article

Tracking the Activity of the Interstellar Object 3I/ATLAS through Its Perihelion

Simon B. Porter, K. J. Walsh, Adam Hibberd, Robert G. Kennedy et al.
1 citations
Research Notes of the AAS
Gamma-ray bursts and supernovae
1.15
article

Tracking the Activity of the Interstellar Object 3I/ATLAS through Its Perihelion

Simon B. Porter, K. J. Walsh, Adam Hibberd, Robert G. Kennedy, W. P. Blase, T. M. Eubanks, A. Coffinet, C. E. DeForest, P. Kervella, B. G. Bills, Andreas M. Hein, Thomas Lehmann, Carlos Gomez de Olea Ballester
article en
1 citations

Abstract

Abstract In order to facilitate interplanetary spacecraft observations of 3I/ATLAS, we have monitored and predicted the optical properties of its coma using both ground and space-based observations. Here, we describe how the data from space-based solar coronagraphs and the Polarimeter to Unify the Corona and Heliosphere mission enabled tracking of 3I/ATLAS’s optical magnitude throughout its entire perihelion passage, including the period between 2025 October 8 and 30, when it was not visible from Earth.

Research Notes of the AASVol. 9(11)
Oak Ridge Associated Universities (US), Southwest Research Institute (US), Centre National de la Recherche Scientifique (FR), Jet Propulsion Laboratory (US), University of Luxembourg (LU), Université Paris Cité (FR), Sorbonne Université (FR), Chinese Academy of Science South America Center for Astronomy (CL), Sorbonne Paris Cité (FR), Development Initiatives (GB), Shell (United Kingdom) (GB), Technical University of Munich (DE), Friedrich Schiller University Jena (DE)
Openalex Percentile: Top 15%
Gamma-ray bursts and supernovae
1.15
DOIOpen Access PDFOpenAlex
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Tracking the Activity of the Interstellar Object 3I/ATLAS through Its Perihelion — Simon B. Porter, K. J. Walsh, et al. · Research Notes of the AAS (2025) | TGRS Research Map | TGRS