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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520010 |RR Lyr *|192527.91 +424703.7 |RRAB | 7.06 | 8.12 | |V |42923.4193 | | 0.56686776 |19 |A5.0-F7.0 |09338 06874| |-0.110 -0.196|2000.0 | |Hip | |RR Lyr |
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_______________Cross-identifications:_______________
RR Lyr = AN 1901.0034 |
RR Lyr = BD +42 3338 |
RR Lyr = GSC 3142.00494 |
RR Lyr = HD 182989 |
RR Lyr = HV 00180 |
RR Lyr = Hip 095497 |
RR Lyr = SAO 048421 |
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Reference to a chart or photograph:
06874. H.L.Giclas, R.Burnham, N.G.Thomas, Lowell Bull N120, 1963.
Reference to a study of the star:
09338. Yu.S.Romanov, Yu.T.Fedotov, A.I. Movchan, Astron Tsirk N1205, 4, 1982.
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Remark:
[Fe/H] = -1.14. Delta(S) = 6. Blazhko effect of variable
amplitude (practically to complete disappearance of
Blazhko effect); Pi = 40.8d. Variations of Max light
phase up to 0.14P; magnitude in Max var in the range
up to 0.6m, that in Min var in the range up to 0.1m
[03418].According to [07270], a cycle ~4 yr is present
in Blazhko effect amplitude changes; at the end of
the cycle the Blazhko effect phase changes abruptly
by 0.25Pi. Magnetic field strength varies with the
pulsational period [09339].
P var. Max = 2414856.480 + 0.56682069d*E
(JD2414800 - 18800); Max = 2421854.052 + 0.56685169d*E
(JD2418800 - 26500) [09379]; Max = 2426571.3828 +
0.56684333d*E (JD2426500 - 32500) [09338]; Max =
2438215.9492 + 0.566830d*E (JD2438000 - 41000)
[05238]; Max = 2438215.9492 + 0.56683313d*E
(JD2441000 - 42900) [09338]; since JD2442900 - see Table.
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