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

ID# 32

XTE J1118+480


RA (h:m:s)  DEC (º:':")  J2000:
11:18:10.79 +48:02:12.42
( Fender2001b )

Galactic l (º)  b (º)  J2000:
157.6611620  +62.3205658

Year of discovery: 2000  
( Remillard2000 )

# of outbursts after discovery: 1

Dynamically confirmed BH

Basic data

Distance (d) 1.72±0.1 (kpc) Gelino2006
d above plane (z) 1.52±0.09 (kpc) Gelino2006
Orbital period 4.078414±5E-06 (h) Torres2004
Peak X-ray flux 4.99E-10
(erg/s/cm2) [keV] Brockshopp2010
Outburst magnitude (AB) V=13±0.3 (mag) Torres2002 Zurita2005 Hynes2000
Quiescent magnitude (AB) R=19.055 (mag) Gelino2006 Shahbaz2005 Gelino2006
E(B-V) 0.024 (mag) Garcia2000
Notes XTE J1118+480 showed an outburst in 2005 ( Zurita2005 ). The peak X-ray flux is taken from that outburst ( Brocksopp2010 ).

Dynamical parameters

Orbital period 4.078414±5E-06 (h) Torres2004
Star's spectral type K7 – M1V Khargharia2013
Star's radial velocity amplitude (K2) 709±1 (km/s) GonzalezHernandez2008
Mass function 'f(M1)' 6.27±0.04 (M) GonzalezHernandez2008
BH mass (M1) 6.9 – 8.2 (M) Khargharia2013
Mass ratio (q=M/M1) 0.024±0.009 Calvelo2009
Inclination angle (i) 68 – 79 (deg) Khargharia2013
Rot. broadening (v sini) 96+3-11 (km/s) Calvelo2009

Optical/NIR magnitudes

Mag. Outburst (AB) Torres2002 Zurita2005 Hynes2000
Mag. Quiescence (AB) Gelino2006 Shahbaz2005 Gelino2006
=19.055 =19.606 =20.037 =18.6±0.1 =18±0.1
Ks g' i'
=18.45±0.1 =21±0.3 =19±0.2
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XTE J1118+480 in Simbad
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Object marked with lines

Finding chart
Finding chart
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.