NNo GCVS J2000.0 Type Max Min I Min II Epoch Year Period M-m/D Spectrum References Other desig. p.m.(as/yr) Epoch Ident. New type GCVS
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310135 |DM Cyg *|212111.55 +321128.7 |RRAB | 10.93 | 11.99 | |V |42582.406 | | 0.4198600 |13 |A9-F6 |04957 00522| |+0.007 -0.003|2000.0 | |Tyc2 | |DM Cyg |
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_______________Cross-identifications:_______________
DM Cyg = AN 1928.0007 |
DM Cyg = GSC 2707.00757 |
DM Cyg = SVS 0164 |
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Reference to a chart or photograph:
00522. D.Ya.Martynov, Izv Astron Engel'gardt Obs N20, 1938.
Reference to a study of the star:
04957. V.G.Derevyagin, B.N.Firmanyuk,V.P.Zessewitsch, Astron Tsirk N1166, 7, 1981.
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Remark:
P var. Max = 2425887.560 + 0.4198557d*E (JD2415200 -
25900) [03506]; Max = 2425887.5597 + 0.41985715d*E
(JD2425880 - 29250) [00522]; Max = 2433872.420 +
0.41985842d*E (JD2429250 - 37900) [03506]; Max =
2438677.708 + 0.4198619d*E (JD2438600 - 41250)
[07114]; since JD2441240 - see Table.
There is also Blazhko effect with the elements:
Max(O - C) = 2442978.97 + 26.01d*E [08853];
-0.01 d< = O - C <= +0.01d. Delta(S) = 0.
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