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

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ID# 40

XTE J1818-245

( Rupen2005a )

RA     [J2000]     DEC

[]          []

18:18:24.43  -24:32:17.96

ℓ                      b

[deg]                            [deg]

007.4426994  -04.19145967

Year of discovery: 2005  
( Levine2005a )

# of outbursts after discovery:

Basic data

Distance [kpc] 3.55±0.75 CadolleBel2009
Distance to the plane (z) [kpc] -0.26±0.05 CadolleBel2009
Orbital period (Porb) [h]
Peak X-ray flux [erg s-1 cm-2]
Outburst magnitude (AB) V=17.42±0.01 Steeghs2005 Lopez2019
Quiescent magnitude (AB) R>18.4 CadolleBel2009
E(B-V) [mag] 0.758 Schlafly2011
Spectral type


XTE J1818-245: The J- and H-band magnitudes in quiescence were taken ∼72 days after the peak of the outburst ( CadolleBel2009 ) whereas the Ks quiescent magnitude reported by Lopez2019 was obtained about 10 years after the outburst.

Optical/NIR magnitudes

Mag. Outburst (AB)
Steeghs2005 Lopez2019
V=17.42±0.01 R∼17.00±0.01 I=16.39±0.01
Mag. Quiescent (AB)
J=17.11±0.3 H=16.1±0.2 Ks=20.0±0.2
Aladin finding chart
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XTE J1818-245 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.