Government sources revealed to ANI that the A-SAT weapon was launched around 11:16AM on Wednesday and targeted an Indian satellite which had been decommissioned and was orbiting on a 'Low Earth Orbit' at a height of 300 KM from the earth's surface. The entire test, with confirmation of target elimination, took 3 minutes.

from Times of India https://timesofindia.indiatimes.com/india/target-destroyed-by-indias-a-sat-missile-was-an-out-of-service-indian-satellite/articleshow/68594265.cms