AXA Light Curves
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Summary of transit
Comments on LCs
on this web page
The period for TrES-1
needs only a slight shortening. Transit depth and length also seem to
be well-established and are not changing. No anomalies yet.
- This section updated 2009.09.03
RA = 19:04:09.8,
Decl = +36:37:57
Season = July 09
B=12.607, V = 11.764, Rc=11.300,
Ic = 11.362, J = 10.294, K = 9.819, B-V = 0.843
(BVRcIc from Henden)
HJDo = 3186.806341
(51) & P = 3.0300722 (2)
day (Schneider listing in Extrasolar Planets Encyclopaedia)
HJDo = 3186.80642 (51)
& P = 3.03007157 (42)
day (AXA fit); or even better: HJDo =
4223.09089 (26) & P = 3.03007157 (42)
day (alternative AXA fit)
Depth = 25.0 ±
0.3 mmag (all bands)
Length = 2.47 ± 0.04
Fp = 0.31 ± 0.04, F2
= 0.84 ± 0.08
Transit Measurements - This section updated 2009.09.03
Light curves below here have been included
in the table & plots in above section
Data below here have been included in table & plots (above)
Good choice of reference stars (no trend or air mass curvature).
Right on time, and a little deeper with CLR than R-band.
Nice having a V-band LC (after 3 yrs).
Cindy Foote's "gold standard" (when she uses the 24-inch)
shows excellent agreement with the ephemeris mid-transit time and also
The computer clock must have been off 1 hour, so mid-transit
occured ~1 minute late, +/- a few minutes. Length is uncertain because
ingress was missed. Good depth agreement.
Excellent agreement with expectaion for mid-transit time,
length and depth. First submitted data by Ramon Naves.
Good agreement in all respects.
This is one of the TrES-1 LCs that led to interest in the
possibility of a brightening after egress.
Beautiful! One of the first, if not THE first, amateur LCs
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L. Gary. Nothing on this web page is copyrighted. This site opened:
July 04, 2007. Last Update: 2009.10.03