The December 2025 Astronomy & Astrophysics (vol. 704) still says “in progress”, but January is already being trickled out. So I’m going to call it for December, and what a month: Peña-Asensio, E. Seligman, D. Z. The interstellar flux gap:… Read More »Note, Paper: Year-End Bender (Pending?)
Revisiting arXiv.org’s “archives”: Astrophysics > Instrumentation and Methods for Astrophysics arxiv.org/abs/2512.19763[Submitted on 20 Dec 2025]Jacobson-Bell, B. Croft, S. White, E. et al. Breakthrough Listen Observations of 3I/ATLAS with the Green Bank Telescope at 1-12 GHz Spoiler alert: “We report a… Read More »3I’s Silent Sliding Findings
Courtesy of our friends Astronomers’ Telegram: https://www.astronomerstelegram.org/?read=17561Bolin, B. Wong, I. Abron, L-M. et al. Gemini post-perihelion visible photometry and spectroscopy of interstellar comet 3I/ATLASATel #17561 24 Dec 2025; 20:36 UT The Gemini North telescope in Hawaii turned to our interstellar… Read More »Gemini Spies 3I Volatiles
Another quick report on quick phenomenon, courtesy of Astronomers’ Telegram: www.astronomerstelegram.org/?read=17551Serra-Ricart, M. Licandro,J. Alarcon, M. R. Post-perihelion Sunward Tail Detected on Interstellar Comet 3I/ATLAS: A Geometric Projection of the Dust TailATel #17551; 19 Dec 2025; 11:54 UT Comets have not just one tail,… Read More »3I Kite-Like Sight Cite
More comety goodness coming: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2512.12819[Submitted on 14 Dec 2025]Serra-Ricart, M. Licandro, J. Alarcon, M. R. Pre-perihelion detection of a wobbling high-latitude jet in the interstellar comet 3I/ATLAS One feature of comets is jetting- emission… Read More »Interstellar Jet Presented (ATLAS)
Hot on the heels of the last apparent comet discovery: http://www.cbat.eps.harvard.edu/iau/cbet/005600/CBET005648.txt We have multiple reports of an object with a coma and/or tail- therefore indicating activity, therefore indicating a comet. Except this “comet” orbits, to the precision of our measurements… Read More »*NEW* : Main-Belt Comet P/2025 W4 (Pan-STARRS)
Quick blurb in Astronomers’ Telegram: www.astronomerstelegram.org/?read=17538Jehin, E. Hmiddouch, S. Aravind, K. et al. TRAPPIST bright comets production rates: 3I/ATLAS, 24P/Schaumasse, C/2025 T1 (ATLAS), C/2025 K1 (ATLAS) and C/2025 R2 (SWAN)on 10 Dec 2025: 22:50 UT Besides covering multiple comets, coverage of interstellar… Read More »ATLAS Slight-Aperture Brightnesses
Let’s catch up with preprints: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2512.09020Hoogendam, W. B. Kuesters, D. Shappee, B. J. et al. University of Hawaii 88-inch Telescope Observations of the Interstellar Comet 3I/ATLAS: Spectrophotometric Blue-Sensitive Spectral Time Series Spanning Two Months… Read More »3I Timely Time Series
There’s a mid-month (15 January 2026, vol. 444) Icarus: Rosenbush, V. Kleshchonok, V. Ivanova, O. et al. A comprehensive study of comet 67P/Churyumov-Gerasimenko in the 2021/2022 apparition. I. Photometry, spectroscopy, mor… Art 116799 .2025.116799Benson, C. I. Scheeres, D. J. The… Read More »Note, Paper: Moving-Object Boogie
Just discovered November (while we were feasting): a new Main-Belt comet. A typical comet comes out of the outer Solar System, then warms and activates when it reaches the inner Solar System. Not Main-Belters. These “comets” reside in the asteroid… Read More »*NEW* : Main-Belt Comet 2025 W3 (Kresken)