Variable Star EF Boo


EF Boo = BD +51 1929 = HD 234150 = SAO 029189 

GCVS result

ID: 090150
Variable star: EF Boo
RA 2000: 143230.5
DE 2000: +504941
RA 1950:
DE 1950:
Type of variability: EW/RS
Max (mag): 9.23
Min (mag): 9.83
Photometric system: V
Epoch (JD): 52500.2231
Period (d): 0.4205161
Year of outburst for N, SN:
M-m (or D):
Spectrum: G5
Study reference: N0041
Chart or phot. ref.: HIP
Cases of non-existence:

GCVS NOTE result

Min II = 9.78 . P varies, current elements are given.

GCVS NOTES fulltext search:  

NSV: Suspected Variable NSV  not found.

BRKA result

Variable star: EF Boo
Brightness type: C10
Points: 6
RA 2000: 143230.6
DE 2000: +504941
Max (mag): 9.43
Min (mag): 9.99
Sec (mag):
Photometric system: V
Epoch (JD): 48500.3016
Period (d): 0.42051309
D (hour): W
d (hour):
Astrophysical note:
Reference: IBVS 5033
Finding chart: X

MEKA: Variable star EF Boo 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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 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
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