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Details for Revision 1
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Name
  YY Dra  
AAVSO UID
000-BDQ-339 (No observations)  
Constellation
Draco Sequence
J2000.0
11 43 35.00 +71 42 09.0  (175.89583 +71.70250) Search nearby
B1950.0 11 40 45.44 +71 58 48.2
Galactic coord. 130.303 +44.442
Other names

(Internal only)
SVS 504    
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Variability type
EA/SD
Spectral type --
Mag. range
12.9 - <14.5 p
Discoverer --
Epoch
25 Mar 1913 (HJD 2419852.4) Ephemeris
Outburst --
Period 4.21123 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto GCVS position 11 43 35.00 +71 42 09.0 (J2000.0). No star there.
2 Otero, Sebastian Alberto The variable is lost. No 12.9-mag. star at this position. No eclipsing binary with this period has been found either. The star is probably the same as DO Dra, a CV with range 10.0 - 16.5 V. The GCVS keeps both entries separated so care should be taken not to confuse one for the other.
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References
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1 “Tsessevich” Project: an Attempt to Find the System YY Dra. I 2011arXiv1102.1271V
2 W.Zessewitch, Perem. Zvezdy 4, 291, 1934. --
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Supporting Documents
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Revision History
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3 Otero, Sebastian Alberto 2011-05-26 00:14 UTC Star is lost. variability flag set to N.
2 Otero, Sebastian Alberto 2011-05-20 19:25 UTC Remark about identification and reference added.
1 Admin, VSX 2005-12-18 01:33 UTC Preserved original object data.

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