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                         Kepler K2-C1 EPIC-201146489: Eclipsing Binary

Discussion:
One or both of the stars in this eclipsing binary system show considerable surface activity; one of the rotation rates (or, more precisely, the frequency patterns of probable-repeating star-spots) is 17.5 ± 0.4 day.   Further, it appears that the eclipse times are unrelated to stellar variability suggesting that the EB is a "detached" type.
The plotted Corrected Flux vs. Time data (converted from NASA's K2 raw data by A. Vanderburg) were accessed by starting with his website https://www.cfa.harvard.edu/~avanderb/k2.html.  RED points are the primary eclipses; YELLOW points are the secondary eclipses.

4 PRIMARY Eclipses (too few to determine any ETV):
Period: 21.4287 ± 0.0015 days.
T_0: 1989.5858 ± 0.0027 [BJD-2454833]
Depth: 6807 ± 329 ppm.


2 SECONDARY Eclipses (a third one is missing due to a 2.9-day data gap):
Period: ~ 21.4283 days.
T_0: ~ 1996.2526
Depth: 2416 ± 100 ppm.


PHASE: 0.3111 ± 0.0001 (an indication of highly elliptical orbits).


K2 Data Search & Retrieval (http://archive.stsci.edu/k2/data_search/search.php):
RA: 173.432190, DE: -5.378735
RA: 11 33 43.726, DE: -05 22 43.45
Other IDs: 2MASS J11334372-0522432; UCAC 424-055124.


SIMBAD (http://simbad.harvard.edu/simbad):
No object listed.

26 Feb 2015