RA (ICRS) DEC
|
ℓ b
|
Distance [kpc] | 2.7±0.7 | Jonker2004 |
---|---|---|
Distance to the plane (z) [kpc] | -0.14±0.04 | Jonker2004 |
Orbital period (Porb) [h] | 8.258095±0.000005 | Charles1991Casares1995aIoannou2004 |
Peak X-ray flux [erg s-1 cm-2] [keV] |
3.46E-07 [2-10] |
Tsunemi1989 |
Outburst magnitude (AB) | V=16.4 | Wagner1988Charles1988 |
Quiescent magnitude (AB) | R=21.3±0.2 | Callanan1991Beekman1996 |
E(B-V) [mag] | 1.1 – 1.7 | Charles1991Casares1995a |
Dynamically confirmed BH
Orbital period [h] | 8.258095±0.000005 | Charles1991Casares1995aIoannou2004 |
---|---|---|
Star's spectral type | K3 – 7V | Casares1995aHarlaftis1996 |
Star's radial velocity amplitude (K2) [km/s] | 520±5 | Casares1995aHarlaftis1996 |
Mass function 'f(M1)' [M☉] | 5±0.1 | Casares1995aHarlaftis1996 |
BH mass (M1) [M☉] | 5.5 – 8.8 | Ioannou2004 |
Mass ratio (q=M2/M1) | 0.04±0.01 | Harlaftis1996 |
Inclination angle (i) [deg] | 54 – 60 | Ioannou2004 |
Rot. broadening (v sini) [km/s] | 86±8 | Casares1995aHarlaftis1996 |
|
|||
---|---|---|---|
V=16.4 | |||
Callanan1991Beekman1996 |
|||
R=21.3±0.2 | |||
I=20.2±0.2 | |||
J=19.0±0.2 | H=18.37±0.03 | Ks=18.9±0.2 |
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Orientation: North up, East left.
Object marked
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Finding chart reference: Callanan1991