IAU COMMISSION 27                             UNPUBLISHED DATA FILE 342E





       Photometry of the W UMa Star V1073 Cygni = HD 204038

          by Steven L. Morris & Stephen A. Naftilan 

Differential CCD observations were obtained by SAN with the 0.61-meter 
telescope at Table Mountain Observatory, with BD+33 4248 as the 
comparison star. Our results will be published this year in the PASP. 

The observations published by C. Sezer (1993, Ap&SS, 208, 15) do not 
have published normal points. For the convenience of future researchers, 
we have included the normal points we formed from Sezeršs observations 
and used in our analysis.

Submitted by
      Steven Morris
      Physics Dept.
      Los Angeles Harbor College
      Wilmington, CA
      90744
      morriss@laccd.cc.ca.us


********************************************************************************



CCD differential magnitudes of V1073 Cygni taken in 1998

                                                                  

Heliocentric	Heliocentric	Heliocentric
Julian Date	Julian Date	Julian Date
(2451000+)	   DV	(2451000+)	   DV	(2451000+)	   DV
                                                                  

2.75384	-0.530	3.78447	-0.374	4.91412	-0.522
2.76132	-0.558	3.79296	-0.354	4.92814	-0.472
2.76615	-0.561	3.80059	-0.330	4.93188	-0.472
2.76842	-0.562	3.80708	-0.320	4.94322	-0.386
2.77496	-0.576	3.81383	-0.302	4.94922	-0.397
2.77908	-0.593	3.82028	-0.305	4.95645	-0.410
2.78197	-0.583	3.82668	-0.293	4.96335	-0.373
2.78740	-0.587	3.83791	-0.293	4.96614	-0.427
2.79039	-0.612	3.84359	-0.298	5.71007	-0.538
2.79460	-0.603	3.85374	-0.331	5.71273	-0.523
2.79921	-0.607	3.85634	-0.331	5.72154	-0.501
2.80416	-0.621	3.86317	-0.358	5.73386	-0.456
2.80681	-0.638	3.87380	-0.385	5.74102	-0.425
2.81071	-0.628	3.87777	-0.400	5.75059	-0.375
2.81436	-0.614	3.88079	-0.401	5.76067	-0.353
2.81805	-0.628	3.88770	-0.427	5.76727	-0.332
2.82100	-0.636	3.89589	-0.459	5.77403	-0.309
2.82347	-0.625	3.90471	-0.500	5.78360	-0.278
2.82759	-0.634	3.90729	-0.493	5.79334	-0.268
2.82963	-0.634	3.91432	-0.503	5.80588	-0.283
2.83519	-0.628	3.92294	-0.484	5.81522	-0.310
2.83877	-0.635	3.92692	-0.524	5.81846	-0.318
2.85277	-0.640	3.93565	-0.544	5.82765	-0.336
2.86641	-0.607	3.94464	-0.548	5.83379	-0.374
2.86963	-0.615	3.95297	-0.586	5.84103	-0.411
2.87472	-0.607	3.95944	-0.579	5.84376	-0.409
2.87813	-0.615	4.70355	-0.498	5.85093	-0.438
2.88661	-0.608	4.71368	-0.519	5.85732	-0.460
2.89373	-0.604	4.72696	-0.529	5.86132	-0.479
2.89952	-0.587	4.73671	-0.536	5.86725	-0.490
2.90430	-0.593	4.73958	-0.533	5.87580	-0.510
2.90647	-0.594	4.74662	-0.554	5.88703	-0.544
2.91392	-0.569	4.75364	-0.560	5.88985	-0.564
2.91603	-0.569	4.76109	-0.577	5.89629	-0.573
2.92204	-0.574	4.77019	-0.601	5.90499	-0.589
2.92800	-0.550	4.78368	-0.573	5.91418	-0.602
2.93820	-0.539	4.80504	-0.646	5.91694	-0.608
2.94270	-0.533	4.81189	-0.597	5.92526	-0.616
2.94932	-0.516	4.81824	-0.601	5.93375	-0.627
2.95278	-0.497	4.83215	-0.646	5.94074	-0.639
2.95796	-0.476	4.83539	-0.596	5.94375	-0.640
3.70102	-0.588	4.84237	-0.591	5.94979	-0.640
3.70912	-0.535	4.84996	-0.582	5.95273	-0.645
3.71586	-0.554	4.85689	-0.582	5.95917	-0.650
3.72186	-0.508	4.86402	-0.578	5.96645	-0.648
3.73140	-0.519	4.86710	-0.551	5.97263	-0.639
3.73689	-0.509	4.87721	-0.549	5.98210	-0.648
3.74390	-0.500	4.88398	-0.531	5.99209	-0.648
3.75395	-0.484	4.89100	-0.523
3.77823	-0.404	4.90671	-0.526		
                                                                  


Normal points formed from Sezeršs (1993) light curves 
of V1073 Cygni

                                                                   

Phase	  DB	  DV   Weight	Phase	  DB	  DV   Weight
                                                                   

0.00	 0.164	-0.243	13	0.50	 0.114	-0.286	 8
0.01	 0.159	-0.246	12	0.51	 0.110	-0.292	 8
0.02	 0.141	-0.261	11	0.52	 0.102	-0.295	 7
0.03	 0.117	-0.282	 9	0.53	 0.087	-0.313	10
0.04	 0.093	-0.312	14	0.54	 0.070	-0.339	 7
0.05	 0.064	-0.341	 9	0.55	 0.054	-0.362	 7
0.06	 0.030	-0.368	10	0.56	 0.024	-0.391	 5
0.07	 0.005	-0.395	 9	0.57	 0.000	-0.412	 6
0.08	-0.023	-0.432	 8	0.58	-0.030	-0.438	 3
0.09	-0.044	-0.447	13	0.59	-0.059	-0.466	 4
0.10	-0.064	-0.473	 4	0.60	-0.060	-0.465	 1
0.11	-0.086	-0.498	11	0.61	-0.080	-0.490	 3
0.12	-0.106	-0.519	 6	0.62	-0.089	-0.497	 1
0.13	-0.138	-0.533	 9	0.63	-0.122	-0.537	 2
0.14	-0.148	-0.542	 8	0.64	-0.138	-0.562	 2
0.15	-0.157	-0.555	 9	0.65	-0.145	-0.561	 4
0.16	-0.175	-0.567	 8	0.66	-0.157	-0.583	 3
0.17	-0.185	-0.577	 5	0.67	-0.174	-0.585	 4
0.18	-0.187	-0.585	 2	0.68	-0.179	-0.590	 3
0.19	-0.213	-0.601	 4	0.69	-0.192	-0.614	 3
0.20	-0.220	-0.615	 3	0.70	-0.211	-0.607	 1
0.21	-0.228	-0.618	 3	0.71	-0.209	-0.617	 4
0.22	-0.234	-0.627	 2	0.72	-0.215	-0.623	 4
0.23	-0.233	-0.625	 5	0.73	-0.215	-0.625	 3
0.24	-0.231	-0.624	 4	0.74	-0.229	-0.631	 3
0.25	-0.228	-0.625	 5	0.75	-0.234	-0.637	 3
0.26	-0.216	-0.621	 2	0.76	-0.238	-0.645	 4
0.27	-0.212	-0.622	 9	0.77	-0.226	-0.634	 4
0.28	-0.217	-0.623	 8	0.78	-0.228	-0.627	 4
0.29	-0.211	-0.618	 6	0.79	-0.216	-0.618	 3
0.30	-0.200	-0.604	 7	0.80	-0.215	-0.621	 5
0.31	-0.191	-0.595	 8	0.81	-0.212	-0.623	 6
0.32	-0.173	-0.584	 8	0.82	-0.195	-0.613	 6
0.33	-0.162	-0.563	 7	0.83	-0.188	-0.600	 5
0.34	-0.157	-0.560	 7	0.84	-0.170	-0.585	 5
0.35	-0.136	-0.539	 5	0.85	-0.155	-0.570	 7
0.36	-0.130	-0.533	 7	0.86	-0.137	-0.549	10
0.37	-0.120	-0.528	 6	0.87	-0.123	-0.523	 8
0.38	-0.104	-0.512	 9	0.88	-0.110	-0.515	12
0.39	-0.084	-0.494	 8	0.89	-0.089	-0.502	 7
0.40	-0.069	-0.473	 6	0.90	-0.063	-0.470	 9
0.41	-0.046	-0.457	 8	0.91	-0.041	-0.454	10
0.42	-0.022	-0.437	 6	0.92	-0.016	-0.424	13
0.43	 0.002	-0.415	 8	0.93	 0.009	-0.397	13
0.44	 0.027	-0.383	 8	0.94	 0.042	-0.366	13
0.45	 0.056	-0.362	 6	0.95	 0.070	-0.335	13
0.46	 0.073	-0.339	 6	0.96	 0.099	-0.309	15
0.47	 0.091	-0.320	 6	0.97	 0.121	-0.285	11
0.48	 0.108	-0.294	 5	0.98	 0.146	-0.257	12
0.49	 0.115	-0.288	 7	0.99	 0.155	-0.249	10