Query= XZ CYG GCVS Query forms
  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
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
310051 |XZ    Cyg *|193229.31 +562317.5 |RRAB      |  8.9    |  10.16     |            |V |44124.440   |     |     0.46670        |     |A5-F5            |00001 06225|           |+0.084 -0.024|2000.0  | |Hip      |          |XZ    Cyg |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

_______________Cross-identifications:_______________
XZ    Cyg     = AN   1905.0076                |     
XZ    Cyg     = BD   +56 2257                 |     
XZ    Cyg     = GSC  3929.01961               |     
XZ    Cyg     = HD   239124                   |     
XZ    Cyg     = Hip  096112                   |     
XZ    Cyg     = SAO  031761                   |     
____________________________________________________

      Reference to a chart or photograph:
06225. V.P.Zessewitsch, Variable Stars and Methods of Their Studies, (in russian) M., 1970.

Reference to a study of the star:
00001. GCVS compilers.

__________________________________________________________________

Remark: [Fe/H] = -1.2. P var. Max = 2417201.241 + 0.4665878*E - 0.000107d*10**(-6)*E**2 (JD2414000 - 35000) [02550]; Max = 2438562.796 + 0.466570d*E (JD2434000 - 39800); Max = 2440445.789 + 0.466497d*E (JD2439800 - 41000) [06237]; Max = 2441453.3856 + 0.4664731d*E (JD2441000 - 42500) [07424]; Max = 2443028.641 + 0.466438d*E (JD2442500 - 43800) [09101]; Max = 2444142.650 + 0.466649d*E (JD2443800 - 44200) [09102]; since JD2444100 - see Table. Besides that the star has a strongly expressed Blazhko effect; the period of Blazhko effect varies, too [07424, 07425]. 0.13P <= M - m <= 0.22P; 0.90m <= A(B) <= 1.70m, 0.70m <= A(B) <= 1.30m; -0.05P < O - C < +0.05; Max A = 2417025.5 + 57.401d*E (JD2417000 - 38500); Max A = 2438881.7 + 58.387d*E (since JD2438500).[09103]. After JD2444000 Blazhko effect period probably decreased to 56.3d [09102].

----The End----