Ensemble of CO streamer condensations identified in DR21. The red circles represent redshifted emission, and the blue circles represent blueshifted emission. The green triangle shows the location of the center as determined by Zapata et al. (2013b), and the yellow square reflects the new position described in this paper. The new position of the center is (α, δ)_J2000.0 = 20^h39^m00^s.8 ± 00^s.2, +42°19′37″.62 ± 0″.97. The lines were obtained by connecting the tips of the filaments to the center (yellow square).