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Table 3

Central instants of WASP-3b transits estimated from all individual light curves.

N T0 (mean), BJD(TDB) T0 (med), BJD(TDB) Σ O − C (s) ID Telescope Selected?

(0) 2454143.85107 ± 0.00040 1.00  −0.00019  −0.50 no (baseline ephemeris)
248 2454601.86671 ± 0.00026 1.12 0.00038 1.48 T1 FLWO-1.2 m no (partial)
250 2454605.56042 ± 0.00030 2.00 0.00042 1.42 G1 LT-2.0 m yes
262 2454627.72317 ± 0.00068 8.07 0.00115 1.70 T2 FLWO-1.2 m no (partial)
268 2454638.80399 ± 0.00034 1.27 0.00096 2.85 T3 FLWO-1.2 m yes
280 2454660.96479 ± 0.00015 1.00  −0.00025  −1.68 T4 UH-2.2 m yes
290 2454679.43318 ± 0.00042 1.90  −0.00021  −0.50 C1 HRI-EPOXI yes
291 2454681.27967 ± 0.00034 1.23  −0.00055  −1.63 C2 HRI-EPOXI yes
292 2454683.12798 ± 0.00049 1.09 0.00092 1.88 C3 HRI-EPOXI yes
293 2454684.97524 ± 0.00040 1.11 0.00134 3.36 C4 HRI-EPOXI yes
294 2454686.82144 ± 0.00074 2.17 0.00071 0.96 C5 HRI-EPOXI no (partial)
296 2454690.51475 ± 0.00059 1.46 0.00035 0.59 C6 HRI-EPOXI no (partial)
297 2454692.36168 ± 0.00056 1.36 0.00044 0.79 C7 HRI-EPOXI yes
298 2454694.20776 ± 0.00083 1.20  −0.00031  −0.37 C8 HRI-EPOXI yes
308 2454712.67641 ± 0.00064 1.06  −0.00000  −0.01 U1 UDEM-0.36 m yes
309 2454714.52368 ± 0.00041 3.15 0.00042 1.04 G2 LT-2.0 m no (partial)
433 2454943.53240 ± 0.00060 1.64 0.00161 2.70 E1 Newton-0.2 m yes
444    2454963.84450 ± 0.00081 1.16  −0.00146  −1.81 T5 FLWO-1.2 m yes
444    2454963.84527 ± 0.00118 1.31  −0.00069  −0.59 S1 VCT-0.5 m yes
446 2454967.53905 ± 0.00070 1.30  −0.00058  −0.84 E2 SC-12′′ yes
451 2454976.77284 ± 0.00030 1.14  −0.00097  −3.23 T6 FLWO-1.2 m yes
457 2454987.85256 ± 0.00093 1.63  −0.00225  −2.43 U2 UDEM-0.36 m yes
484 2455037.71878 ± 0.00086 1.01  −0.00058  −0.68 U3 UDEM-0.36 m yes
486    2455041.41172 ± 0.00035 1.03  −0.00131  −3.75 D1 OAVdA-0.25 m yes
486    2455041.41255 ± 0.00058 1.19  −0.00048  −0.83 M1 Rohzen-0.6 m yes
488 2455045.10565 ± 0.00106 1.12  −0.00105  −0.99 Z1 Weihai-1 m no (low S/N)
490 2455048.80065 ± 0.00107 1.06 0.00027 0.26 U4 UDEM-0.36 m no (red noise)
499 2455065.42023 ± 0.00036 1.12  −0.00165  −4.60 M2 Rohzen-0.6 m yes
506 2455078.34809 ± 0.00114 1.39  −0.00163  −1.44 M3 Rohzen-0.6 m yes
519 2455102.36030 ± 0.00084 1.75 0.00171 2.04 M4 Jena-0.9 m yes
539 2455139.29753 ± 0.00073 3.26 0.00224 3.08 M5 Jena-0.9 m yes
629 2455305.51117 ± 0.00056 1.29 0.00074 1.34 M6 Jena-0.9 m yes
653    2455349.83306 ± 0.00090 1.13  −0.00140  −1.56 S3 VCT-0.5 m yes
653    2455349.83390 ± 0.00069 1.00  −0.00056  −0.81 S2 KPNO-2.0 m yes
653    2455349.83434 ± 0.00054 1.30  −0.00012  −0.22 E3 SC-12′′ yes
654 2455351.68410 ± 0.00155 1.05 0.00280 1.81 L1 SC-11′′ no (red noise)
666 2455373.84289 ± 0.00045 1.12  −0.00042  −0.94 E4 Newton-0.3 m yes
686 2455410.78073 ± 0.00173 1.34 0.00071 0.42 L2 SC-11′′ no (red noise)
693 2455423.70889 ± 0.00048 1.06 0.00103 2.15 U5 UDEM-0.36 m yes
699 2455434.78772 ± 0.00051 1.46  −0.00114  −2.25 E5 RC-12.5′′ yes
706 2455447.71600 ± 0.00117 3.61  −0.00071  −0.61 L3 SC-11′′ no (red noise)
837 2455689.65263 ± 0.00015 1.14 0.00054 3.66 N1 IAC-0.8 m yes
838 2455691.49899 ± 0.00064 1.27 0.00007 0.11 E6 Monteboo-0.6 m yes
842 2455698.88476 ± 0.00160 1.18  −0.00149  −0.94 S4 VCT-0.5 m yes
844 2455702.58052 ± 0.00028 1.04 0.00059 2.12 N2 IAC-0.8 m yes
849 2455711.81615 ± 0.00107 1.28 0.00204 1.92 E7 RC-12′′ no (low S/N)
851 2455715.50882 ± 0.00057 1.24 0.00105 1.84 N3 IAC-0.8 m no (low S/N)
864 2455739.51620 ± 0.00017 1.20  −0.00042  −2.49 N4 IAC-0.8 m yes
877 2455763.52511 ± 0.00031 1.07  −0.00036  −1.19 N5 IAC-0.8 m yes
884 2455776.45192 ± 0.00089 1.09  −0.00140  −1.58 N6 IAC-0.8 m no (red noise)

Notes. The columns give the transit epoch N assuming T = T0 + NP and the original ephemeris from Pollacco et al. (2008), the best-fit value for the central instant T0 of the transit and the associated σ, the median value of the distribution of T0 from the residual permutation (RP) algorithm and the associated errors σ +  and σ − , the “skew” parameter Σ = max {σ + ,σ −  } /min { σ + ,σ − }, the O−C according to the new ephemeris (Eq. (10)) in seconds, the O − C in units of σ, the ID code of the light curve, the telescope employed, and comments about whether and why the data point is excluded from the “selected” sample. Simultaneous transits are marked with a star in the first column.

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