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

ID# 16

GRS 1124-684

N Mus 1991 = GU Mus

RA (h:m:s)  DEC (º:':")  J2000:
11:26:26.65 -68:40:32.83
( dellaValle1991a )

Galactic l (º)  b (º)  J2000:
295.3006588  -07.0726335

Year of discovery: 1991  
( Lund1991 Makino1991 )

# of outbursts after discovery:

Dynamically confirmed BH

Basic data

Distance (d) 5.9±0.3 (kpc) Hynes2005
d above plane (z) -0.73±0.04 (kpc) Hynes2005
Orbital period 10.38254±7E-05 (h) Orosz1996
Peak X-ray flux 1.36E-07
(erg/s/cm2) [keV] Brandt1992
Outburst magnitude (AB) V∼13.5 (mag) dellaValle1991a
Quiescent magnitude (AB) i'=19.92±0.04 (mag) King1996a Shahbaz2010 Shahbaz1997
E(B-V) 0.3 (mag) dellaValle1991a

Dynamical parameters

Orbital period 10.38254±7E-05 (h) Orosz1996
Star's spectral type K3 – 5V Orosz1996 Casares1997
Star's radial velocity amplitude (K2) 407±3 (km/s) Orosz1996 Wu2015
Mass function 'f(M1)' 3.02±0.06 (M) Orosz1996 Wu2015
BH mass (M1) 3.8 – 7.5 (M) Shahbaz1997 Orosz1996 Gelino2001a
Mass ratio (q=M/M1) 0.079±0.007 Wu2015
Inclination angle (i) 39 – 65 (deg) Shahbaz1997 Orosz1996 Gelino2001a
Rot. broadening (v sini) 85±3 (km/s) Wu2015

Optical/NIR magnitudes

Mag. Outburst (AB) dellaValle1991a
Mag. Quiescence (AB) King1996a Shahbaz2010 Shahbaz1997
i' u' g' H J
=19.92±0.04 =21.5±0.4 =20.65±0.05 ∼18.39 =19.05±0.02
K (not AB)
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GRS 1124-684 in Simbad
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Object marked with lines

Finding chart
This research has made use of NASA's Astrophysics Data System (ADS) and the SIMBAD database operated at CDS (Strasbourg, France)
Please acknowledge the use of this catalogue in any published work you derive from it.