Variable Star RR Lyr

CROSS IDENTIFICATION: RR Lyr

RR Lyr = AN 1901.0034 = BD +42 3338 = HD 182989 = HV 00180 = SAO 048421 

GCVS result

ID: 520010
Variable star: RR Lyr
RA 2000: 192527.9
DE 2000: +424704
RA 1950:
DE 1950:
Type of variability: RRAB
Max (mag): 7.06
Min (mag): 8.12
Photometric system: V
Epoch (JD): 42923.4193
Period (d): 0.56686776
Year of outburst for N, SN:
M-m (or D): 19
Spectrum: A5.0-F7.0
Study reference: 09338
Chart or phot. ref.: 06874
Cases of non-existence:

GCVS NOTE result

"mu alpha = -0.11"", mu delta = -0.19"". [Fe/H] = -1.14 Delta(S) = 6. Blazhko effect of variable amplitude (practically to complete disappearance of "Blazhko effect) "phase up to 0.14P 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 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) "(JD2418800 - 26500) [09379] "0.56684333d*E (JD2426500 - 32500) [09338] 2438215.9492 + 0.566830d*E (JD2438000 - 41000) "[05238] "(JD2441000 - 42900) [09338]

GCVS NOTES fulltext search:  

NSV: Suspected Variable NSV  not found.

BRKA: Variable star RR Lyr not found.

MEKA: Variable star RR Lyr not found.

DSS plate 15'x 15'

Image from the Digitized Sky Survey at the STScI Archive.

 

Please put the variable's designation into field in common style - for example: ZUMa, zuma, V477Cyg, v1182Cyg, NSV 255, nsv2544. Designation of bright variable stars like Beta Persei type in short style (three letters) - bet Per. The complete cross-identification among more then 30 catalogues will be done after submitting.
Spaces and cases are ingnored..


 
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