A previously unknown physical law of aberration of physical quantities of a body moving relative to an observer, discovered by the author, is presented. In accordance with the law of aberration, the observed (measured using a measuring device) quantities of a body moving relative to the observer are directly proportional to the same true quantities and inversely proportional to a coefficient that depends on the speed of movement. This law is formulated in mathematical form. The law of aberration combines 16 different physical quantities. The law of aberration is confirmed by two experiments. This law is simple in nature. The law of aberration is multifacetedly symmetrical and amazingly beautiful. The discovery of new physical laws is a rather rare and therefore significant event for world science. The last Nobel Prize was awarded to Owen Whillans Richardson for his discovery of a law of physics in 1928, almost a century ago. This work is translated automatically from Russian using Google translator. Original work: Плясовских Александр Петрович. (2023). Неизвестный ранее физический закон аберрации величин тела, движущегося относительно наблюдателя. https://doi.org/10.5281/zenodo.8300359