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

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ID# 14

GS 1734-275

GRO 1735-27 = KS 1732-273

(Voges1999)

RA     (ICRS)     DEC

[hh:mm:ss.ss]          [dd:mm:ss.ss]

17:36:02.00  -27:25:41.00

ℓ                      b

[deg]                            [deg]

000.1608028  02.59055981

Year of discovery: 1988  
(Makino1988a)

# of outbursts after discovery:


Basic data
Distance [kpc]
Distance to the plane (z) [kpc]
Orbital period (Porb) [h]
Peak X-ray flux [erg s-1 cm-2]
[keV]		 1.20E-09
[2-10]		 Yamauchi2004
Outburst magnitude (AB)
Quiescent magnitude (AB)
E(B-V) [mag] 1.322 Schlafly2011
Spectral type


NOTES




Optical/NIR magnitudes
Mag. Outburst (AB)
Mag. Quiescent (AB)
Aladin finding chart
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GS 1734-275 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), the SIMBAD database operated at CDS (Strasbourg, France) and APLpy
Please acknowledge the use of this catalogue in any published work you derive from it.
Last modified: 22 September 2025.