RA (ICRS) DEC
|
ℓ b
|
Distance [kpc] | >5 | Hynes2004Heida2017 |
---|---|---|
Distance to the plane (z) [kpc] | >-0.45 | Hynes2004Heida2017 |
Orbital period (Porb) [h] | 42.21±0.01 | Heida2017Hynes2003aLevine2006 |
Peak X-ray flux [erg s-1 cm-2] [keV] |
2.56E-08 [2-10] |
XTE/ASM |
Outburst magnitude (AB) | I=13.6±0.1 | Buxton2012 |
Quiescent magnitude (AB) | r=19.9±0.1 | Shahbaz2001Lewis2012 |
E(B-V) [mag] | 1.2 | Hynes2004 |
Dynamically confirmed BH
1H J1659-487 (GX 339-4) is a quasi persistent source. Peak X-ray flux from the 2002 outburst (Homan2005). Peak outburst magnitude obtained from Buxton2012 (MJD=54132). |
Orbital period [h] | 42.21±0.01 | Heida2017Hynes2003aLevine2006 |
---|---|---|
Star's spectral type | K1 – 2 probably IV | Hynes2004Munoz-Darias2008Heida2017 |
Star's radial velocity amplitude (K2) [km/s] | >219±3 | Heida2017 |
Mass function 'f(M1)' [M☉] | 1.91±0.08 | Heida2017 |
BH mass (M1) [M☉] | 2.3 – 9.5 | Heida2017 |
Mass ratio (q=M2/M1) | ≤0.18±0.05 | Heida2017 |
Inclination angle (i) [deg] | 37 – 78 | Heida2017 |
Rot. broadening (v sini) [km/s] | 64±8 | Heida2017 |
|
|||
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V=14.7±0.1 | I=13.6±0.1 | ||
J=12.6±0.1 | |||
Shahbaz2001Lewis2012 |
|||
R=21.6±0.3 | |||
r=19.9±0.1 | |||
Orientation: North up, East left.
Object marked
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V1=18.50±0.06 | I1=15.57±0.07 | J1=14.26±0.09 | H1=13.88±0.09 |
V2=17.39±0.05 | I2=15.80±0.07 | J2=14.79±0.09 | H2=14.41±0.10 |
V3=16.95±0.05 | I3=15.93±0.06 |