Table B.1

Sub-stellar, planetary mass objects that would be observable by MIRI-MRS. The catalogue was retrieved from the Exoplanet.eu (exoplanet.eu) database and includes all bound objects regarded as planets (excluding verified Brown Dwarfs) with estimated mass up to 20 M_J. Planets that are not resolved from their host star by the MRS and planets orbiting at wide separations (>400 AU) are excluded.

Target	Teff	a	Mass	Distance	Ang. Sep.	Reference
	[K]	[AU]	[MJ]	[pc]	[as]
HR 8799 d	1200	27.0	8.3 ± 0.6	41.3	0.65	Wang et al. (2018)
HR 8799 c	1200	42.9	8.3 ± 0.6	41.3	0.94	Wang et al. (2020)
HR 8799 b	1100	68.2	7	41.3	1.72.	Barman et al. (2015)
GJ 504 b	550	43.5	4.0	17.5	2.48	Bonnefoy et al. (2018)
HD 95086 b	1050	61.7	2.6 ± 0.4	90.4	0.62	De Rosa et al. (2016)
HIP 65426 b	1600	109.2	9 ± 3	111.4	0.83	Cheetham et al. (2019)
2M 0219 b	1700	160	13.5 ± 1.5	39.4	3.96	Artigau et al. (2015)
YSES-1 b**	1700	162	14 ± 3	94.6	1.71	Bohn et al. (2020)
YSES-1 c**	1200	320	6 ± 1	94.6	3.4	Bohn et al. (2020)
YSES-2 b	-	115	6.3	110	1.05	Bohn et al. (2021)
2M 2236 b	1200	230	12.5 ± 1.5	63	3.7	Bowler et al. (2017)
ROXs 42B(AB) b	1900	140	9 ± 3	135	1.2	Daemgen et al. (2017)
HD 203030 b	1050	487	11	41	11.9	Miles-Páez et al. (2017)
2M 0103(AB) b	-	84	13 ± 1	47.2	1.7	Delorme et al. (2013)
AB Pic b	2000	275	13.5 ± 0.5	47.3	5.5	Bonnefoy et al. (2010)
1RXS 1609 b	1800	330	14	145	2.2	Lafrenière et al. (2010)
CT Cha b**	2500	440	17 ± 6	165	2.6	Wu et al. (2015)
GSC 6214-210 b	1700	320	17 ± 3	145	2.2	Pearce et al. (2019)
51 Eri b*	750	11.1	2.9 ± 0.3	29.4	0.5	Samland et al. (2017)
κ And. b*	1850	100	13	50	1.06	Wilcomb et al. (2020)
	GTO/ERS Targets
β Pic b	1750	9.2	9.8 ± 2.7	19.3	0.5	Nowak et al. (2020)
2M 1207 b	1600	42	4	52.4	0.78	Patience et al. (2010)
VHS 1256 b	1000	102	19 ± 5	22.2	8.1	Zhou et al. (2020)
Ross 458 c	650	1160	11.3 ± 4.5	63.0	102	Burgasser et al. (2010)