YY Gem Individual Light Curves
      (Not Including Those During the 10-Day Intensive Monitoring)
    
    
    

After 3.2 years this primary transit was "on time" (i.e., 1.26 ± 0.22 minutes early, using the ephemeris adopted in 2013; the last primary transit was also 1.2 minutes early, on 2012.12.12). The depth is also the same (530.0 ± 2.3 vs. 528.7 ± 1.7 mmag on 2012.12.12). However, the starspots seem to have changed because the OOT slope is different from 3.2 years ago.  

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   oot   Disregard the "pyramid shaped" feature at 9.7 hrs; it's due to reflections within the telescope (possibly caused by the nearby moon).

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   sap   
______________________________________________________  2012.02.11 - Gary- i' ____________________________________________________

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______________________________________________________  2011.12.29 - Gary- g' ____________________________________________________

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   oot   AMC = -6.2 mmag/airmass (v2622)

   oot   AMC = -5.0 mmag/airmass (v2625)

   oot   AMC = -3.8 mmag/airmass (v2628)
  Based on above g'r'i'z' LCs.
______________________________________________________  2011.12.28 - Gregorio - Vs ____________________________________________________

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______________________________________________________  2011.12.27 - Gregorio - Ic ____________________________________________________

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______________________________________________________  2011.12.27 - Srdoc - Rs _____________________________________________________

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______________________________________________________  2011.12.26 - Cindy Foote - Ic _________________________________________________

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______________________________________________________  2011.12.26 - Cindy Foote - Ic _________________________________________________

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______________________________________________________  2011.12.26 - Gary - Ic ___________________________________________________

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______________________________________________________  2011.12.23/24 - Srdoc - R+ ____________________________________________________

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______________________________________________________  2011.12.23 - Garlitz - R ____________________________________________________

  spo  Notice the orbital OOT variation, with brightness peaking near primary transit (consistent with other LCs).
____________________________________________________  2011.10.28 - Gary - B,V,Rc,Ic,z' ____________________________________________

  oot  AMC = -7.5 mmag/airmass. 

  spo  Primary transit

   spo   Primary transit.

   spo   Primary transit

   spo   Primary tranist
____________________________________________________  2011.10.28 - Cindy Foote - B,V,Rc,Ic _____________________________________________

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____________________________________________________  2011.10.24 - Gary - B,V,Rc,Ic _____________________________________________

Notice the small amplitude sinusoidal variation before secondary transit.

A similar amplitude sinusoidal variation. 

A smaller amplitude sinusoidal variation. 

   spo  Essentially no sinusoidal variation. 
_____________________________________________  2011.10.24  Gary & FooteJ & FooteC ______________________________________________

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_________________________________________________  2011.10.20  Gary & FooteJ  ___________________________________________________

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    WebMaster: B. Gary.  This site opened:  2011.10.20.  Last Update:  2013.02.06