Harrison Agrusa
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harrisonagrusa.bsky.social
Harrison Agrusa
@harrisonagrusa.bsky.social
Asteroid 28888
Postdoc at Observatoire de la Côte d’Azur
Current status: gardening with a view. Had to harvest ~1/4 of my onions early because somebody has a habit of trampling on them in search of the ball…
June 25, 2025 at 5:29 PM
Had a fun time being a part of this paper where we used a combination of SPH and N-body simulations to explore how asteroid satellites form from collisions.

arxiv.org/abs/2505.03325
Satellite formation around the largest asteroids
Satellites around large asteroids are preferentially found among those with the most rapid rotation and elongated shape. The taxonomic statistics are similarly skewed; in total, 13 asteroids larger th...
arxiv.org
May 7, 2025 at 4:20 PM
Reposted by Harrison Agrusa
2 hours and 4 minutes to the closest approach of Lucy with #asteroid (52246) Donaldjohanson [DJ].

↔️ current distance to DJ: 100 thousand km
☀️ current phase angle: 13.98°
🪨 estimated size of DJ on L'LORRI camera: 6-10 pixels

▶️ www.whereIsLucy.space
#PlanetSci #SciComm
April 20, 2025 at 3:47 PM
In Japan for the next 10 days for a few exciting meetings. Today and tomorrow, I am at JAXA’s ISAS for a Hayabusa2# science team meeting. What a great excuse to visit when the cherry blossoms are in full bloom!
April 4, 2025 at 4:54 AM
Reposted by Harrison Agrusa
Working up here at the Obervatoire de la Côte d'Azur, #Nice today and gave a talk on #Comet activity modelling this morning #PlanetSci.
Thanks to everyone who came and thanks very much to @harrisonagrusa.bsky.social for hosting me!
March 24, 2025 at 12:53 PM
Playing around with some renderings of DART impact ejecta simulations. It’s amazing what you can do with @matplotlib.org and @reboundbot.bsky.social !
March 21, 2025 at 5:00 PM
Happy to announce that I’ve been selected as a participating scientist on NASA’s Lucy mission. I can’t wait to join the team and explore the Trojans! science.nasa.gov/uncategorize...
NASA Selects Participating Scientists to Join Lucy Asteroid Mission - NASA Science
NASA has selected eight participating scientists to join its Lucy mission to the Jupiter Trojan asteroids. These asteroids are remnants of our early
science.nasa.gov
February 27, 2025 at 9:49 PM
New (to me) handmade table and chairs found at a flea market in Nice. Restoring it now with some beeswax. €100 and will probably outlive me. This room is finally coming together!
December 27, 2024 at 3:34 PM
I decided it would be a good idea to procrastinate on job applications and play some Kerbal Space Program instead. Using a mod to play with a 1/9 scale real solar system, did a nice Voyager style mission. Here are my Jupiter and Neptune/Triton flybys :)
December 5, 2024 at 7:34 PM
I found a fun Easter egg in For All Mankind. They used real DART papers as props for a scene related to altering the orbit of an asteroid! On the left is Rivkin et al. 2021 and on the right is Hirabayashi et al. 2022.
January 22, 2024 at 6:52 PM