Photometric Observations of the Binary Near-Earth Asteroid (65803) Didymos in 2015–2021 Prior to DART Impact

P. Pravec^*, C.A. Thomas, A.S Rivkin, P. Scheirich, N. Moskovitz, M.M. Knight, C. Snodgrass, J. de Leon, J. Licandro, M. Popescu, A. Thirouin, D. Fohring, C.O. Chandler, W.J. Oldroyd, C.A. Trujillo, E.S. Howell, S.F. Green, J. Thomas-Osip, S.S. Sheppard, T.L. FarnhamE. Mazzotta Epifani, E. Dotto, S. Ieva, M. Dall'Ora, R. Kokotanekova, B. Carry, D. Souami

^*Corresponding author for this work