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