Our paper (led by Mike Alexandersen) is in review, and will hopefully be accepted and on the arxiv within a couple weeks.

Other LIDO papers that are already out:

https://iopscience.iop.org/article/10.3847/PSJ/adc10c

https://iopscience.iop.org/article/10.3847/PSJ/addd22 (this one will get talked about more in an upcoming talk)

#DDA2026

Hot classical TNO distribution (funny story, this was the most "boring" science case we could think of, but we needed something quick for the survey paper-other for fun science gets its own papers)

We (well, mostly Kat Volk) built a dynamical stability model by mostly filling the hot classical region and eroding (yay REBOUND)

#DDA2026

This means yesterday in the neighborhood

Nate Kaib (PSI) talking about dynamically new comets (a>10,000AU), talking about pericenter position relative to node, hard to match sims to observations.

There was a star, HD 7977, that passed within 4000-24,000AU from the sun 2.5 million years ago. This would have perturbed lots of comet orbits, simulations with star passes at 6000-10,000AU match current observations much better. We are still living through a comet shower! Cool!

#DDA2026

Super puffs! Some exoplanets are less dense than styrofoam! One possible explanation is tidal heating. Planets misaligned with their stars' spin axis are puffier. Weird.

Realistic exoplanet tides now included in a Reboundx package.

Obliquities also important for tidal migration. Cassini states invoked!

#DDA2026

pkdgrav package good for simulating this, making predictions about what systems we should find in Kuiper Belt at higher resolution: 5% of simulated systems are triples.

#DDA2026

#DDA2026

#DDA2026

Recurring theme for Stan Dermott memorial talks: plots are IMPORTANT! (totally agree) So here's a beautiful plot she showed from 1986, that shows how dust bands are created in Solar System (orbital caustics!)

Dust bands tell us about asteroid collisional families. Takes millions of years for full band to form, partial bands give timescales since major collisions, COOL. Dust band structure was confirmed by WISE data.

#DDA2026

Now works on distribution of human-made debris pieces in orbit. Now at point where collisions dominate debris creation. Active removal required for long-term.

#DDA2026

"You won't like it. It's a bit like being drunk."

"What's wrong with being drunk?"

"Ever ask a glass of water?"

Ooo Fomalhaut, my favourite disk system! The brightness variations in the disk place constraints on the forced eccentricities resulting from unseen planets in the system.

Fom b is a dust cloud, not a planet, which I am incredibly proud I wrote about years ago! Now proven from JWST images!

#DDA2026

> that Harvard astronomer

I exhaled strongly out my nose

I guess I have a 1-degree-removed connection here? The postdoc I first worked with, Beth Holmes, who taught me a lot, when I was a baby undergrad, had just finished her PhD with him. (She died from a heart condition while I was still an undergrad)