Variable Star XYUMa

CROSS IDENTIFICATION: XY UMa

XY UMa = BD +55 1317 = HD 237786 = SAO 027143 

GCVS result

ID: 830050
Variable star: XY UMa
RA 2000: 090955.9
DE 2000: +542918
RA 1950:
DE 1950:
Type of variability: EB/DW/RS
Max (mag): 9.50
Min (mag): ( 0.67
Photometric system: V
Epoch (JD): 35216.5011
Period (d): 0.478994587
Year of outburst for N, SN:
M-m (or D):
Spectrum: G2V
Study reference: 08623
Chart or phot. ref.: 08953
Cases of non-existence:

GCVS NOTE result

"Mu alpha = -0.0055s, mu delta = -0.175"". P var." Non-linear term: +2.77d*10**(-11)*E**2. The brightness outside eclipses var by 0.16m V. The depth of Min I is 0.48m - 0.67m, that of Min II is 0.19m. Migrating wave.

GCVS NOTES fulltext search:  

NSV: Suspected Variable NSV  not found.

BRKA result

Variable star: XY UMa
Brightness type: 10
Points: 3
RA 2000: 090956.2
DE 2000: +542927
Max (mag): 9.50
Min (mag): <10.2
Sec (mag): 9.69
Photometric system: V
Epoch (JD): 50837.4843
Period (d): 0.47899497
D (hour): B
d (hour): -
Astrophysical note:
Reference: SAC 71
Finding chart: B

MEKA: Variable star XY UMa not found.

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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