Timing Observations of Exoplanet Transits at Apache Point: XO-2 b

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Parameter Burke 2007 Torres 2008 TOETAP 2008
period (days) 2.615857 +/- 5e-6 2.615857 (fixed) 2.61585 +0.47550 / -0.43324 **
Rp / Rs 0.1038 +0.0167 / -0.0400 0.10395 +0.00090 / -0.00085 0.10281 +0.0136 / -0.0155
a / Rs 8.2 +0.1 / -0.2 8.2 +0.1 / -0.2 7.741 +1.373 / -1.101
incl (deg) 88.9 +/- 0.7 88.9 +0.60 / -0.75 87.905 +2.095 / -2.230
** Errors kind of nonsensical
JD - 2400000
UT Date
Target
Predicted Transit
UT Start / End
Observations
UT Start / End
First Frame
Last Frame
Conditions, Comments ptraw directory mtpipe directory
54411
11/07/2007
XO-2
09:52
11:34
08:42
12:38
361913
362030
Mostly photometric. Full transit window plus pre-ingress and post-egress. ptraw/54411 no
54432
11/28/2007
XO-2
07:35
10:16
06:35
11:16
366999
367135
Cirrus, thicker at times. Full transit window. A couple of gaps. ptraw/54432 no
54453
12/19/2007
XO-2



ptraw/54453 mtpipe/54453
54466
01/01/2008
XO-2



ptraw/54466 mtpipe/54466
54474
01/09/2008
XO-2



ptraw/54474 mtpipe/54474
54479
01/14/2008
XO-2



ptraw/54479 mtpipe/54479
54495
01/30/08
XO-2



ptraw/54495 mtpipe/54495
54529
03/04/2008
XO-2



Excellent conditions; full window observed ptraw/54529 mtpipe/54529
54555
03/30/2008
XO-2
06:26
09:07
05:22
08:03
390468
390548
Photometric. Plenty of pre-ingress observation, but ends at about the time of egress. ptraw/54555 mtpipe/54555
54555
//2008
XO-2



ptraw/54555 mtpipe/54555