CHEOPS observations of the HD 108236 planetary system: a fifth planet, improved ephemerides, and planetary radii

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Table A.3

Comparison of the photometric precision reached by TESS (TE) and CHEOPS (CH), quantified by the relative uncertainty δ of the squared ratio between the planetary and stellar radius dF.


Planet	# Transits	dF	gap₁₂	gap₂₃	gap₃₄	Photometric error: δ [%]
	TE:CH	[ppm]	[%]	[%]	[%]	TESS-only	CHEOPS-only
b	12:1	250	47	67	0	9.3	12
c	8:1	500	0	38	100	5.8	5.4
d	4:1	750	100	54	56	4.8	7.4
e	2:1	1000	94	61	0	5.2	4.1
f	2:1	450	16	43	100	16	4.8

Notes. Results are also influenced by specific LC features, such as gaps, especially if they occur during the ingress or egress phases. Columns labelled with gap_ij express the temporal percentage of gaps occurring between the ith and the jth contact in CHEOPS LCs.

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