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Zhao, K. C. Chambers, K. Matilainen, K. W. Smith, L. Galbany, L.-P. Li, L. Tartaglia, M. D. Stritzinger, M. Fraser, M. Gromadzki, M. Newsome, N. Elias-Rosa, P. A. Mazzali, P. J. Pessi, P. Lundqvist, P. Minguez, R. Chiba, R. P. Santos, R. Wainscoat, S. Benetti, S. Campana, S. J. Brennan, S. J. Smartt, S. Moran, S.-Q. Wang, S. Schulze, S. Srivastav, S. Zha, T. B. Lowe, T. de Boer, T. E. M\\\"uller-Bravo, T. J. Moriya, T. Kangas, T. Kravtsov, T. Petrushevska, T.-W. Chen, W.-P. Gan, X.-F. Wang, Y.-Z. Cai, Y.-Z. Dong, Z.-H. Chen, Z. Li, Z.-Y. Wang","submitted_at":"2026-05-25T13:19:41Z","abstract_excerpt":"We report the results of a photometric and spectroscopic follow-up campaign of the unusual interacting supernova (SN) 2022pda. Precursor variability lasting $\\sim 100$ days is observed before the explosion. The SN light curve has a double peak shape. 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