Multipoint analysis of interplanetary shocks with 6-point observatories around Sun-Earth L1

We present new, multipoint observations of interplanetary shocks observed by six observatories around the first Sun-Earth Lagrange (L1) point. With IMAP, SWFO-L1, ACE, Wind, DSCOVR, and Aditya-L1, we investigate multiple interplanetary shocks associated with the passage of two coronal mass ejections (CMEs) on 11-12 November 2025. Inter-spacecraft separations range from 10s of Earth radii (Re) to ~200 Re, offering a number of different baselines and geometries for multipoint analysis. We analyze shock orientations and speeds and diagnose the interaction between the two CMEs. The 6-point observatories showcase how the CME shocks and sheaths are structured and allow for analysis of the interface between ejecta and ambient solar wind plasmas. We also show that spatial gradients of the structures can be resolved by combining different sets of tetrahedra within the constellation and discuss options for full volume reconstruction of the time-dependent plasma dynamics.