Table 5 from Struve (1946) Radial Velocity Observations of XX Cep Date UT Phase Velocity 1945 days period km/s July 18 11:08 2.323 0.994 -19.1 22 11:13 1.652 0.707 -3.7 24 11:01 1.306 0.559 -28.5 24 11:12 1.314 0.562 -35.5 25 11:12 2.314 0.990 -15.7 26 9:09 0.891 0.381 -40.5 26 9:21 0.900 0.385 -50.8 27 11:01 1.969 0.842 +4.9 27 11:15 1.979 0.847 -3.2 29 11:09 1.638 0.701 -2.1 30 4:25 0.019 0.008 -15.2 30 4:56 0.041 0.018 -43.4 30 6:17 0.097 0.042 -50.2 30 6:36 0.110 0.047 -33.7 31 9:14 1.220 0.522 -23.2 Aug 2 11:08 0.962 0.412 -65.9 2 11:19 0.970 0.415 -50.5 2 11:30 0.977 0.418 -33.2 3 11:21 1.971 0.843 +3.1 3 11:32 1.978 0.846 -8.7 4 11:20 0.633 0.271 -63.6 4 11:32 0.641 0.274 -63.9 5 11:30 1.640 0.702 -4.8 6 11:27 0.300 0.128 -49.6 7 11:30 1.302 0.557 -15.5 10 11:25 1.962 0.839 -7.7 10 11:37 1.970 0.843 -5.7 11 11:37 0.633 0.271 -59.6 13 11:34 0.293 0.125 -46.2 14 11:27 1.288 0.551 -18.1 14 11:39 1.296 0.554 -21.5 15 11:20 2.283 0.977 -2.6 16 9:44 0.880 0.376 -56.7 16 9:57 0.889 0.380 -52.6 17 11:35 1.957 0.837 -4.2