Variable Star XYUMa


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..

Search for variable star:
Search in: All catalogues / databases
 Search for data on the NET
 Open European Journal on Variable stars

 GCVS (2011)  43.675 records
 NSV (1997) 14.811 records
 BRKA (2001)  1.432 records
 MEKA (2001)  147 records
 CzeV, SvkV and RafV catalogues (new variables)
 BCVS (1994)  529.953 records
 Show DSS plate 15'x 15' (use coords: )
(Selected catalogue has to be checked above.)