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Table A.2.

Quiescent epochs and magnitudes

Source Outburst Quiescence Quiescent References
(Year) (MJD) Mags for Mags
V404 Cyg 1989 48814-57190 V = 18.42±0.02, R = 16.52±0.01 (1)
2015 57405- V = 18.2±0.3 (2)

BW Cir 1987 ∼47200-50754 R∼20.2, I∼19.2 (3)
1997 ∼51135-57000 R∼20-21, i’ = 19.7-20.8 (3), (4)

GX 339-4 a 2014-5 57579-57990 V≃20, R≃19, i≃18.7 (5)

XTE J1550-564 2001 52020-52719 V≃22 (6)
2003 52764- V≃21.9 (7)

MAXI J1820+070 2018 60106- g’ = 19.31±0.02, r’ = 18.58±0.01, i’ = 18.22±0.01 (8)

N. Oph 77 1977 48719- V = 21.5±0.1 (9)

N. Mus 91 1991 48736- V = 20.66±0.03, R = 19.75±0.27, I = 19.00±0.22 (10)

MAXI J1305-704 2012 56771- r’ = 21.69±0.17 (11)

GS 2000+25 1988 47763- R = 21.21±0.15 (12)

A 0620-00 1975 43053- V = 18.25, R = 17.00 (13)

XTE J1650-500 b 2001 ∼52490- V∼24, R∼22 (14)

N. Vel 93 1993 49846- R = 20.6±0.1 (15)

N. Oph 93 2016 58208- i’ = 21.39±0.15 (16)

XTE J1859+226 1999 51781-59250 V = 23.39±0.09, R = 22.48±0.07 (17)

KY TrA c 1990 48290- V = 23.6±0.1, R = 22.3±0.1, I = 21.47±0.09 (18)

GRO J0422+32 1992 49600- R = 20.94±0.11 (19)

XTE J1118+480 2000 52311-53375 R = 18.93±0.01 (20)
2005 53447- R∼19 (21)

Swift J1753.5-0127 2005 57907-60216 V = 22.17±0.25, I’ = 21.00±0.14 (22)

Swift J1357.2-0933 2011 56042-57845 g’ = 22.26±0.38, r’ = 21.54±0.35, i’ = 21.21±0.36; I∼20-21 (23), (24)

MAXI J1659-152 2010 56087- r’ = 24.20±0.08, I = 23.3±0.1 (25)

References. (1) Casares et al. (1993); (2) Casares et al. (2022); (3) Casares et al. (2009); (4) Koljonen et al. (2016); (5) Russell et al. (2017); (6) Orosz et al. (2002); (7) Orosz et al. (2011); (8) Baglio et al. (2023); (9) Remillard et al. (1996); (10) King et al. (1996);(11) Mata Sánchez et al. (2021); (12) Callanan & Charles (1991); (13) Ciatti & Vittone (1977); (14) Garcia & Wilkes (2002); (15) Shahbaz et al. (1996); (16) Saikia et al. (2022); (17) Zurita et al. (2002b); (18) Zurita et al. (2015); (19) Garcia et al. (1996); (20) Zurita et al. (2002c); (21) Zurita et al. (2006); (22) Zhang et al. (2017); (23) Shahbaz et al. (2013); (24) Russell et al. (2018); (25) Corral-Santana et al. (2018).

Notes. (a) It shows outbursts every ∼2.5 years. The following outburst took place in 2017. (b) The quiescent R-band magnitude quoted by Garcia & Wilkes (2002) is consistent with our own PSF analysis of a DECaPS image taken on 29 April 2017, which yields r’ = 22.10±0.12, cThe optical counterpart of KY TrA was lost after the V> 21 upper limit reported by Murdin et al. (1977) during the decay of the 1974 discovery outburst. The quiescent counterpart was only recovered by Zurita et al. (2015) 17 years after a new mini-outburst was serendipitously discovered in 1990.

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