Variable Star TWDra

CROSS IDENTIFICATION: TW Dra

TW Dra = ADS 09706 = AN 1910.0088 = BD +64 1077 = HD 139319 = HV 03274 = SAO 016767 

GCVS result

ID: 340030
Variable star: TW Dra
RA 2000: 153351.1
DE 2000: +635426
RA 1950:
DE 1950:
Type of variability: EA/SD
Max (mag): 8.0
Min (mag): 10.5
Photometric system: p
Epoch (JD): 44136.295
Period (d): 2.8068470
Year of outburst for N, SN:
M-m (or D): 17
Spectrum: A8V+K0III
Study reference: 09053
Chart or phot. ref.: 08953
Cases of non-existence:

GCVS NOTE result

"ADS 9706 A (B 9.5m vis, 23deg, 3.6""). d = 0.02P Min II 8.1. P var. Min I = 2433888.452 + 2.806870d*E "(JD2433000 - 40000) [03825] elements in the Table.

GCVS NOTES fulltext search:  

NSV: Suspected Variable NSV  not found.

BRKA result

Variable star: TW Dra
Brightness type: 09
Points: 5
RA 2000: 153350.9
DE 2000: +635424
Max (mag): 8.0
Min (mag): 10.5
Sec (mag): 8.1
Photometric system: P
Epoch (JD): 51675.517
Period (d): 2.8068559
D (hour): 11.5
d (hour): 1.3
Astrophysical note: P2-3K1?
Reference: Zej,SAC 68
Finding chart: K5X

MEKA: Variable star TW Dra 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
(AFOEV, B.R.N.O., MEDUZA, VSOLJ, VSNET, HPHK, AICU-Ondrejov)
 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.)