A decade of transit photometry for K2-19: Revised system architecture

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Volume 703 (November 2025)

A&A, 703 (2025) A167

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Table B.1

Transit times of the observations.

Epoch	Posterior median	Telescope	Source
	and 68.3% CI [BJD_TDB]	Instrument
Planet d
0	${2456811.426}_{- 0.016}^{+ 0.015}$ $2456811.426_{ - 0.016}^{ + 0.015}$	K2	This work
1	${2456813.945}_{- 0.023}^{+ 0.031}$ $2456813.945_{ - 0.023}^{ + 0.031}$	K2	This work
2	${2456816.433}_{- 0.014}^{+ 0.018}$ $2456816.433_{ - 0.014}^{ + 0.018}$	K2	This work
3	${2456818.965}_{- 0.019}^{+ 0.023}$ $2456818.965_{ - 0.019}^{ + 0.023}$	K2	This work
4	${2456821.468}_{- 0.021}^{+ 0.017}$ $2456821.468_{ - 0.021}^{ + 0.017}$	K2	This work
5	${2456823.990}_{- 0.014}^{+ 0.019}$ $2456823.990_{ - 0.014}^{ + 0.019}$	K2	This work
6	${2456826.490}_{- 0.018}^{+ 0.014}$ $2456826.490_{ - 0.018}^{ + 0.014}$	K2	This work
7	${2456828.954}_{- 0.011}^{+ 0.013}$ $2456828.954_{ - 0.011}^{ + 0.013}$	K2	This work
8	${2456831.486}_{- 0.015}^{+ 0.013}$ $2456831.486_{ - 0.015}^{ + 0.013}$	K2	This work
9	${2456834.007}_{- 0.011}^{+ 0.012}$ $2456834.007_{ - 0.011}^{ + 0.012}$	K2	This work
10	${2456836.5443}_{- 0.0084}^{+ 0.0093}$ $2456836.5443_{ - 0.0084}^{ + 0.0093}$	K2	This work
11	${2456839.025}_{- 0.016}^{+ 0.012}$ $2456839.025_{ - 0.016}^{ + 0.012}$	K2	This work
12	${2456841.514}_{- 0.051}^{+ 0.033}$ $2456841.514_{ - 0.051}^{ + 0.033}$	K2	This work
13	${2456844.041}_{- 0.016}^{+ 0.015}$ $2456844.041_{ - 0.016}^{ + 0.015}$	K2	This work
14	${2456846.582}_{- 0.018}^{+ 0.020}$ $2456846.582_{ - 0.018}^{ + 0.020}$	K2	This work
16	${2456851.523}_{- 0.016}^{+ 0.026}$ $2456851.523_{ - 0.016}^{ + 0.026}$	K2	This work
17	${2456854.069}_{- 0.013}^{+ 0.014}$ $2456854.069_{ - 0.013}^{ + 0.014}$	K2	This work
18	${2456856.571}_{- 0.014}^{+ 0.019}$ $2456856.571_{ - 0.014}^{ + 0.019}$	K2	This work
19	${2456859.082}_{- 0.015}^{+ 0.014}$ $2456859.082_{ - 0.015}^{ + 0.014}$	K2	This work
20	${2456861.6036}_{- 0.0088}^{+ 0.019}$ $2456861.6036_{ - 0.0088}^{ + 0.019}$	K2	This work
21	${2456864.105}_{- 0.019}^{+ 0.012}$ $2456864.105_{ - 0.019}^{ + 0.012}$	K2	This work
22	${2456866.610}_{- 0.022}^{+ 0.014}$ $2456866.610_{ - 0.022}^{ + 0.014}$	K2	This work
23	${2456869.124}_{- 0.022}^{+ 0.042}$ $2456869.124_{ - 0.022}^{ + 0.042}$	K2	This work
24	${2456871.641}_{- 0.018}^{+ 0.014}$ $2456871.641_{ - 0.018}^{ + 0.014}$	K2	This work
25	${2456874.144}_{- 0.029}^{+ 0.018}$ $2456874.144_{ - 0.029}^{ + 0.018}$	K2	This work
26	${2456876.651}_{- 0.016}^{+ 0.038}$ $2456876.651_{ - 0.016}^{ + 0.038}$	K2	This work
27	${2456879.163}_{- 0.014}^{+ 0.028}$ $2456879.163_{ - 0.014}^{ + 0.028}$	K2	This work
28	${2456881.677}_{- 0.022}^{+ 0.018}$ $2456881.677_{ - 0.022}^{ + 0.018}$	K2	This work
29	${2456884.195}_{- 0.080}^{+ 0.032}$ $2456884.195_{ - 0.080}^{ + 0.032}$	K2	This work
30	${2456886.677}_{- 0.025}^{+ 0.022}$ $2456886.677_{ - 0.025}^{ + 0.022}$	K2	This work
31	${2456889.193}_{- 0.025}^{+ 0.028}$ $2456889.193_{ - 0.025}^{ + 0.028}$	K2	This work
Planet b
0	2456813.38390 ± 0.00056	K2	Barros et al. (2015)
1	2456821.30410 ± 0.00088	K2	Barros et al. (2015)
2	2456829.22194 ± 0.00025	K2	Barros et al. (2015)
3	2456837.13900 ± 0.00064	K2	Barros et al. (2015)
4	2456845.06156 ± 0.00053	K2	Barros et al. (2015)
5	2456852.9794 ± 0.0028	K2	Barros et al. (2015)
6	2456860.90005 ± 0.00079	K2	Barros et al. (2015)
7	2456868.82080 ± 0.00052	K2	Barros et al. (2015)
8	2456876.73856 ± 0.00064	K2	Barros et al. (2015)
9	2456884.65834 ± 0.00080	K2	Barros et al. (2015)
30	${2457051.00413}_{- 0.00225}^{+ 0.00218}$ $2457051.00413_{ - 0.00225}^{ + 0.00218}$	FLWO 1.2 m	Narita et al. (2015)
34	${2457082.69550}_{- 0.00116}^{+ 0.00140}$ $2457082.69550_{ - 0.00116}^{ + 0.00140}$	TRAPPIST-South	Narita et al. (2015)
34	2457082 6892 ± 0 0019	NITES	Barros et al. (2015)
35	2457090.6157 ± 0.0014	1-mC2PU Omicron	Barros et al. (2015)
36	2457098.5368 ± 0.0022	Belesta 82-cm	Barros et al. (2015)
41	${2457138.15047}_{- 0.00176}^{+ 0.00145}$ $2457138.15047_{ - 0.00176}^{ + 0.00145}$	OAO 1.88 m/MuSCAT	Narita et al. (2015)
133	2457866 8604 ± 0 0009	Spitzer	Petigura et al. (2020)
141	${2457930.2403}_{- 0.0013}^{+ 0.0015}$ $2457930.2403_{ - 0.0013}^{ + 0.0015}$	LCOGT-SAAO 1 m	This work
150	2458001 5368 ± 0 0014	Spitzer	Petigura et al. (2020)
311	${2459276.8341}_{- 0.0020}^{+ 0.0019}$ $2459276.8341_{ - 0.0020}^{ + 0.0019}$	ExTrA T23	This work
343	${2459530.2882}_{- 0.0032}^{+ 0.0029}$ $2459530.2882_{ - 0.0032}^{ + 0.0029}$	TESS s45	This work
345	2459546.1269 ± 0.0023	TESS s45	This work
346	${2459554.0421}_{- 0.0023}^{+ 0.0021}$ $2459554.0421_{ - 0.0023}^{ + 0.0021}$	TESS s46	This work
347	2459561 9601 ± 0 0023	TESS s46	This work
348	${2459569.8789}_{- 0.0029}^{+ 0.0033}$ $2459569.8789_{ - 0.0029}^{ + 0.0033}$	TESS s46	This work
349	${2459577.7967}_{- 0.0025}^{+ 0.0024}$ $2459577.7967_{ - 0.0025}^{ + 0.0024}$	TESS s46	This work
361	${2459672.8198}_{- 0.0017}^{+ 0.0016}$ $2459672.8198_{ - 0.0017}^{ + 0.0016}$	ExTrA T23	This work
362	${2459680.7365}_{- 0.0023}^{+ 0.0022}$ $2459680.7365_{ - 0.0023}^{ + 0.0022}$	ExTrA T23	This work
398	${2459965.8909}_{- 0.0019}^{+ 0.0021}$ $2459965.8909_{ - 0.0019}^{ + 0.0021}$	ExTrA T23	This work
399	${2459973.8158}_{- 0.0017}^{+ 0.0014}$ $2459973.8158_{ - 0.0017}^{ + 0.0014}$	ExTrA T123	This work
400	2459981 7360 ± 0 0019	ExTrA T123	This work
436	${2460266.8799}_{- 0.0032}^{+ 0.0033}$ $2460266.8799_{ - 0.0032}^{ + 0.0033}$	TESS s72	This work
438	${2460282.7201}_{- 0.0022}^{+ 0.0021}$ $2460282.7201_{ - 0.0022}^{ + 0.0021}$	TESS s72	This work
449	2460369 8272 ± 0 0012	CHEOPS, ExTrAT12	This work
450	${2460377.74640}_{- 0.00055}^{+ 0.00057}$ $2460377.74640_{ - 0.00055}^{ + 0.00057}$	Euler / ECAM, ExTrA T12	This work
451	${2460385.66556}_{- 0.00072}^{+ 0.00070}$ $2460385.66556_{ - 0.00072}^{ + 0.00070}$	Euler / ECAM, ExTrA T12	This work
458	${2460441.10519}_{- 0.00066}^{+ 0.00064}$ $2460441.10519_{ - 0.00066}^{ + 0.00064}$	CHEOPS	This work
Planet c
0	2456817.2730 ± 0.0015	K2	Barros et al. (2015)
1	2456829.1835 ± 0.0013	K2	Barros et al. (2015)
2	2456841.0922 ± 0.0014	K2	Barros et al. (2015)
3	2456853.0091 ± 0.0077	K2	Barros et al. (2015)
4	2456864.9083 ± 0.0019	K2	Barros et al. (2015)
5	2456876.8150 ± 0.0014	K2	Barros et al. (2015)
6	2456888.7161 ± 0.0013	K2	Barros et al. (2015)
87	2457852.4774 ± 0.0074	Spitzer	Petigura et al. (2020)
102	2458030.8645 ± 0.0059	Spitzer	Petigura et al. (2020)
228	${2459529.950}_{- 0.040}^{+ 0.019}$ $2459529.950_{ - 0.040}^{ + 0.019}$	TESS s45	This work
229	${2459541.884}_{- 0.022}^{+ 0.015}$ $2459541.884_{ - 0.022}^{ + 0.015}$	TESS s45	This work
230	${2459553.822}_{- 0.017}^{+ 0.034}$ $2459553.822_{ - 0.017}^{ + 0.034}$	TESS s46	This work
232	${2459577.602}_{- 0.018}^{+ 0.027}$ $2459577.602_{ - 0.018}^{ + 0.027}$	TESS s46	This work
272	${2460053.6499}_{- 0.0028}^{+ 0.0038}$ $2460053.6499_{ - 0.0028}^{ + 0.0038}$	ExTrA T23	This work
290	${2460267.868}_{- 0.013}^{+ 0.011}$ $2460267.868_{ - 0.013}^{ + 0.011}$	TESS s72	This work
291	${2460279.798}_{- 0.014}^{+ 0.017}$ $2460279.798_{ - 0.014}^{ + 0.017}$	TESS s72	This work
301	${2460398.8787}_{- 0.017}^{+ 0.016}$ $2460398.8787_{ - 0.017}^{ + 0.016}$	CHEOPS	This work
304	${2460434.5866}_{- 0.0022}^{+ 0.0023}$ $2460434.5866_{ - 0.0022}^{ + 0.0023}$	Euler / ECAM, ExTrA T23	This work
Candidate planet e
0	${2456812.250}_{- 0.014}^{+ 0.019}$ $2456812.250_{ - 0.014}^{ + 0.019}$	K2	This work
1	${2456832.220}_{- 0.011}^{+ 0.016}$ $2456832.220_{ - 0.011}^{ + 0.016}$	K2	This work
2	${2456852.185}_{- 0.013}^{+ 0.011}$ $2456852.185_{ - 0.013}^{ + 0.011}$	K2	This work
3	${2456872.143}_{- 0.016}^{+ 0.013}$ $2456872.143_{ - 0.016}^{ + 0.013}$	K2	This work

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