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Comments on LCs on this web page
The period should be well established since this is the first bright
transiting exoplanet with 8 years of transit observations. Probably there
are fewer amateur observations of this BTE because by the time most amateurs
began observing BTEs this target was well-observed by the professionals. The
only value in observing this object is to evaluate how often "systematic errors"
are present in amateur light curve data and my model fitting of it.
Basic data -
This section updated 2009.09.11
RA = 22:03:10.8, Decl = +18:53:04
Season = Aug 24
V = 7.66, B-V = 0.59
HJDo = 2826.628521
P = 3.52474859 day
Depth = 18.3 ± 0.8 mmag (RBI bands)
Length = 2.97 ± 0.05 hr
Fp = 0.30 ± 0.03, F2 = 0.80 ± 0.10
The ephemeris for this exoplanet is so well determined, by professionals, that it will never be improved by us amateurs. But it can serve to show how often amateur data is so affected by systematics that outliers are produced.
Transit Light Curves
LCs in this section have not been included in table & plots (above)
LCs below here have been included in table & plots (above)
9831SG2 I see a possible starspot before egress, but then I also see similar features during the OOT portions. It would be nice to have a second observer for this event.
Note the high air mass at the end.
L. Gary. Nothing on this web page is copyrighted. This site opened:
October 26, 2007. Last Update: 2009.11.01