Collinder 21

UBV CCD observations

No	Ref	V	BV	UB
0003	407	9.800	0.608
0004	407	10.086	0.851	0.577
0005	407	9.691	1.546	1.447
0006	407	10.365	1.081	1.079
0007	407	11.169	0.745	0.441
0008	407	11.317	0.594	0.259
0009	407	11.208	0.984	0.788
0010	407	11.319	1.388	1.504
0011	407	11.610	0.891	0.695
0012	407	12.345	0.563	0.266
0014	407	12.812	0.649	0.272
0015	407	12.997	0.680	0.362
0016	407	13.047	0.775	0.482
0017	407	13.889	0.836	0.620
0018	407	14.701	0.488	0.067
0019	407	14.667	0.955	0.779
0020	407	14.864	0.730	0.361
0021	407	15.236	0.750	0.334
0022	407	15.280	1.026	0.931
0023	407	15.501	0.661	0.229
0024	407	15.666	0.778	0.361
0025	407	15.745	0.719	0.246
0026	407	15.795	0.596	0.114
0027	407	15.870	0.540	0.703
0028	407	16.530	1.647	1.009
0029	407	15.928	0.572	0.184
0030	407	16.150	1.072
0031	407	16.381	1.201	1.400
0032	407	16.356	0.706	0.399
0034	407	16.663	1.149	1.200
0036	407	17.141	1.211
0037	407	17.552	1.151
0038	407	18.878	1.896
0039	407	17.659	0.490	0.538
0040	407	17.580	0.664
0041	407	17.732	1.180
0042	407	17.687	0.889
0044	407	17.723	1.067
0045	407	19.010	1.565
0046	407	17.739	0.753	0.245
0047	407	18.137	0.180
0049	407	18.184	0.425
0050	407	19.475	1.463
0062	407	19.450	0.757
0064	407	19.042	0.820
0065	407	19.030	0.691
0081	407	19.842	0.651
0088	407	20.819	-0.267
0094	407	20.868	0.283
0095	407	21.105	-0.028