BlackCAT A Catalog of Stellar-Mass Black Holes in X-ray Binaries

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ID# 66

Swift J1728.9-3613

MAXI J1728-360

(Saha2023)

RA     (ICRS)     DEC [hh:mm:ss.ss]          [dd:mm:ss.ss] 17:28:58.64  -36:14:35.32

ℓ                      b [deg]                            [deg] 351.9548777  -00.96630145

Year of discovery: 2019  
(Negoro2019d)

# of outbursts after discovery:

Basic data

Distance [kpc]
Distance to the plane (z) [kpc]
Orbital period (Porb) [h]
Peak X-ray flux [erg s-1 cm-2] [keV]	1.35E-08 [2-10]	Saha2023
Outburst magnitude (AB)
Quiescent magnitude (AB)
E(B-V) [mag]	6.3	Schlafly2011

It is not a dynamical BH but there was at least a suggestion that it might contain a BH based on X-ray properties

NOTES

Dynamical parameters

Orbital period [h]
Star's spectral type
Star's radial velocity amplitude (K2) [km/s]
Mass function 'f(M1)' [M☉]
BH mass (M1) [M☉]	>4.6	Saha2023
Mass ratio (q=M2/M1)
Inclination angle (i) [deg]

Optical/NIR magnitudes

Mag. Outburst (AB)
Mag. Quiescent (AB)

Aladin finding chart

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Swift J1728.9-3613 in Simbad