Characterization of the HD 108236 system with CHEOPS and TESS Confirmation of a fifth transiting planet

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Table 1

Exoplanetary systems orbiting a bright stellar host (V < 10.5), with more than three planets and at least one transiting planet.

System name	V-mag	Total number of planets	Number of transiting planets	P_inner−P_outer [d]	Reference
HD 219134	5.5	5(6)^(a)	2	3.1–16.8	Motalebi et al. (2015); Gillon et al. (2017a)
55 Cnc	5.95	5	1	0.73–1800	McArthur et al. (2004)
Kepler-444	8.9	5	5	3.6–9.7	Campante et al. (2015)
HIP 41378	8.9	5	5	15.6–324	Vanderburg et al. (2019)
HD 108236	9.2	5	5	3.79–29.5	Daylan et al. (2021); Bonfanti et al. (2021)
Kepler-37	9.8	4	4	13.3–39.8	Barclay et al. (2013)
V1298 Tau	10.1	4	4	8.24–60	David et al. (2019)
TOI-561	10.3	4(5)^(b)	4	0.45–77	Lacedelli et al. (2022)

Notes. The orbital periods range of the planets in each system is given in the P_inner−P_outer column. ^(a)The potential presence of a sixth planet is still controversial. ^(b)Hints of an additional planet in a long-period orbit were observed in radial velocities.

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