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)
In Celestial Mechanics and Dynamical Astronomy for Dec (vol. 137 #6): Knežević, Z. Failures and optimization in computation of asteroid synthetic proper elements 39 s10569-025-10272-0 We track asteroids… oh boy, do we track asteroids. As a matter of routine, we… Read More »Note, Paper: Infinitesimal Planetesimal Decimal?
Lots of good content in Space Science Reviews lately (vol. 221). Now posted: Popescu, M. M. de Léon, J. Prodan, G. P. et al. HyperScout-H: The Hyperspectral Imager for the ESA Hera Mission art. 112 s11214-025-01237-8 The asteroid mission Hera… Read More »Space Science Reviews Hera-HS-H
Yesterday was Oct. 29, perihelion for 3I/ATLAS. That was the point in its trajectory (not orbit) when it was closest to the Sun. As the comet neared the Sun, it rose in temperature, and thus activity. That activity: Astrophysics >… Read More »3I Behind Prime Sky Light
Our interstellar friend is behind the Sun (to observers on or near Earth). Good time to recap activity (emission of coma and tail(s)) so far: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2510.18769[Submitted on 21 Oct 2025]Jewitt, D. Luu, J. Pre-perihelion… Read More »First-Half ATLAS Activity Track
More spectral sleuthing attempted at ATLAS: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2509.26053[Submitted on 30 Sep 2025]Hutsemékers, D. Manfroid, J. Jehin, E. et al. Extreme NiI/FeI abundance ratio in the coma of the interstellar comet 3I/ATLAS As I’ve mentioned before,… Read More »3I/ATLAS Flash-To-Gas Graphed
The latest “issue” (all-digital) of Geochemical Perspectives Letters includes (17 Sep 2025- vol. 37): Wölfer, E. Hellmann, J. Burkhardt, C. et al. Ge, Te, and Zn isotopic link between Ryugu and CI chondrites P. 1 geochemlet.2537 A brief examination of… Read More »Note, Paper: Mod Vol Balls and Falls
No less than Nature Astronomy has just published (17 September 2025): Egal, A. Vida, D. Colas, F. et al. Catastrophic disruption of asteroid 2023 CX1 and implications for planetary defence s41550-025-02659-8 Asteroid 2023 CX1 was discovered in- yes, 2023- and… Read More »Note, Paper: Nut Dropper
In a few days, the Astronomical Society of Japan will hold its annual meeting, starting Sep 9: www.asj.or.jp/en/activities/nenkai/info/ Ordinarily, this might fall below one’s radar, including mine… except: Terai, T. Yoshikawa, E Yoshikawa, M. Emergency by the Subaru Telescope on asteroid 2024 YR4, which… Read More »2025 ASJ Annual Meeting
In the latest issue (Sep., vol. 25 #9) of Research in Astronomy and Astrophysics, a Chinese-centric journal hosted by a US site: Tang, Y. Jiang, Y. Zhang, Z. et al. NEA Detection Method with Neural Network in Sidereal Tracking 095003 … Read More »Note, Paper: Wide Net