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3I + SPHEREx = Identified

We’ve gone a little while without ATLAS matters: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2508.15768[Submitted on 22 Aug 2025]Eubanks, T. M. Bills, B. G. Hibberd, A. et al. 3I/ATLAS (C/2025 N1): Direct Spacecraft Exploration of a Possible Relic of Planetary… Read More »3I + SPHEREx = Identified

3I CI; TI?

Not very dramatic news, but worth a post. An observer claims Color Indices of 3I/ATLAS, and a possible Type Identification: Astrophysics > Earth and Planetary Astrophysics  arxiv.org/abs/2508.08829Beniyama, J.  Simultaneous visible spectrophotometry of interstellar object 3I/ATLAS with Seimei/TriCCS Using the Seimei… Read More »3I CI; TI?

3I Dehydrating

In case you had been assuming, assume no more. Science is about data and evidence: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2508.04675[Submitted on 6 Aug 2025]Water Detection in the Interstellar Object 3I/ATLASXing, Z. Oset, S. Noonan, J. et al. ATLAS… Read More »3I Dehydrating

3I Files (…cont’d…)

The submissions continue: Astrophysics > Earth and Planetary Astrophysics  arxiv.org/abs/2508.00808[Submitted on 1 Aug 2025]Santana-Ros, T. Ivanova, O. Mykhailova, S. et al.  Temporal Evolution of the Third Interstellar Comet 3I/ATLAS: Spin, Color, Spectra and Dust Activity arxiv.org/abs/2508.02499[Submitted on 4 Aug 2025]Martinez-Palomera, J. Tuson,… Read More »3I Files (…cont’d…)

3I/ATLAS Back Access

The parsing continues: arxiv.org: 2507.21967Jul 29 Feinstein, A. D. Noonan, J. W. Seligman, D. Z. Precovery Observations of 3I/ATLAS from TESS Suggest Possible Distant Activity The TESS program, with word out on ATLAS, then went through their “old” data. It… Read More »3I/ATLAS Back Access

3I/ATLAS Rehash

Two arXiv papers I had reported on previously have been updated. Nothing Earth-shattering, but: Astrophysics > Earth and Planetary Astrophysics  arxiv.org/abs/2507.02757v3[Submitted on 3 Jul 2025 (v1), last revised 24 Jul 2025 (this version, v3)]Seligman, D. Z. Micheli, M. Farnocchia, D.… Read More »3I/ATLAS Rehash

3I/ATLAS Grab Bag

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Publications on our interstellar guest 3I/ATLAS continue, as they should- we have only months before it passes behind the Sun. Publications on the arXiv platform: arXiv:2507.14916 Yang, B. Meech, K. J. Connelley, M. et al.  Spectroscopic Characterization of Interstellar Object 3I/ATLAS:… Read More »3I/ATLAS Grab Bag

Vera Rubin Upfront (3I)

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Blogworthy two ways: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2507.13409[Submitted on 17 Jul 2025]Chandler, C. O. Bernardinelli, P. H. Jurić, M. et al, NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1) The Rubin Observatory is so… Read More »Vera Rubin Upfront (3I)