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

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ID# 18

GRS 1915+105

V1487 Aql

( Dhawan2000 )

RA     [J2000]     DEC

[]          []

19:15:11.55  +10:56:44.80

ℓ                      b

[deg]                            [deg]

045.3657052  -00.21897507

Year of discovery: 1992  
( Castro-Tirado1992 )

# of outbursts after discovery:

Basic data

Distance [kpc] 9±2 Reid2014 Zdziarski2014
Distance to the plane (z) [kpc] -0.034±0.01 Reid2014 Zdziarski2014
Orbital period (Porb) [h] 812±4 Steeghs2013
Peak X-ray flux [erg s-1 cm-2]
Outburst magnitude (AB) H=13.09 Shahbaz2008
Quiescent magnitude (AB) I∼23.7±0.4 Boeer1996
E(B-V) [mag] 6.45 Fender1999

Dynamically confirmed BH


GRS J1915+105 has remained in outburst since its discovery in 1992 ( Castro-Tirado1992 ). It is included here because it was detected as a transient source. The peak X-ray flux was obtained from the maximum value in the XTE/ASM light curves (MJD=50317.68034). The K-band magnitude was not transformed into AB system.

Dynamical parameters

Orbital period [h] 812±4 Steeghs2013
Star's spectral type K1 – 5III Harlaftis2004
Star's radial velocity amplitude (K2) [km/s] 126±1 Steeghs2013
Mass function 'f(M1)' [M] 7±0.2 Steeghs2013
BH mass (M1) [M] 12±2 Steeghs2013 Reid2014
Mass ratio (q=M2/M1) 0.042±0.024 Steeghs2013
Inclination angle (i) [deg] 60±5 Reid2014
Rot. broadening (v sini) [km/s] 21±4 Steeghs2013

Optical/NIR magnitudes

Mag. Outburst (AB)
H=13.09 K (not AB)=11.4
Mag. Quiescent (AB)
Aladin finding chart
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GRS 1915+105 in Simbad

Pan-STARRS1 finding chart

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PS1 Finding chart PS1 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.

Last modified: 27 August 2021.