Of late, in Planetary Science Journal (all vol.6): Salazar Manzano, L. E. Gerdes, D. W. Napier, K. J. et al. Prospects of a New L5 Trojan Flyby Target for the Lucy Mission 213 adf5c2Dorsey, R. C. Hopkins, M. J. Bannister,… Read More »Note, Paper: PSJ Particle Population Post
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
Not only are we characterizing interstellar object 3I/ATLAS, we’re going meta: Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2510.13222[Submitted on 16 Oct 2025]Grant, S. R. Jones, G. H. Prospects for the Crossing of Comet 3I/ATLAS’s Ion Tail arxiv.org/abs/2510.11779[Submitted on 15 Oct… Read More »Chance ATLAS Plasma Catch?
The “issues” of Monthly Notices of the Royal Astronomical Society (MNRAS) for October are up: volume 542, #4 – volume 543, #1Li, Z. Qiao, D. Li, X. Spatial temporary capture in the Sun–planet three-body system Pgs 625 staf1430 volume 543,… Read More »Note, Paper: Planetary Particles Aplenty
Briefly: the PUNCH mission to monitor the Sun states that they are still tracking interstellar object 3I/ATLAS, even though the small body has passed “behind” the Sun (as seen from Earth). In other words, ‘solar conjunction’: bsky.app/profile/kwalsh4a.bsky.social/post/3m2rnxlgigs2v “While 3I Atlas… Read More »PUNCH Sun Conjunction Mention
The characterization continues. With the trajectory well-determined over a long arc, we check and recheck spectral bands and lines (therefore, compositions): Astrophysics > Earth and Planetary Astrophysics arxiv.org/abs/2510.02817[Submitted on 7 Oct 2025]Coulson, I. M. Kuan, Y-J. Charnley, S. B. JCMT… Read More »3I Cyanide Multi-Time Described
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
Briefly: I post on the PUNCH mission, since Sungrazing comets are relevant (including ‘comets’- asteroids passing so close to the Sun that rock vaporizes and emits). Now, PUNCH is relevant for (barely) tracking 3I/ATLAS as it starts going behind the Sun… Read More »PUNCH Catches ATLAS Passage
Briefly: The Astronomer’s Telegram posts quick, short, straightforward notices… like telegrams! ATel#17416 www.astronomerstelegram.org/?read=17416Farnham, T. L. Feaga, L. M. Ye, Q. et al. Observations of an Asymmetric CN Coma in Interstellar Comet 3I/ATLAS 23 Sep 2025; 19:02 UT Cyanide and cyano-compounds… Read More »3I Cyan-Active ATLAS
The “issue” of Monthly Notices of the Royal Astronomical Society for September is posted. In it: Volume 542, Issue 1Kleshchonok, V. Sierks, H. Güttler, C. Inner coma of comet 67P/Churyumov–Gerasimenko during increased activity at perihelion on 2015 August 22–23 Pgs… Read More »Note, Paper: Part Departed, or Hardly?