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

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ID# 40

XTE J1818-245

(Rupen2005a)

RA     (ICRS)     DEC [hh:mm:ss.ss]          [dd:mm:ss.ss] 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] [keV]	1.69E-08 [2-10]	CadolleBell2009
Outburst magnitude (AB)	V=17.42±0.01	Steeghs2005Lopez2019
Quiescent magnitude (AB)	R>18.4	CadolleBel2009
E(B-V) [mag]	0.758	Schlafly2011
Spectral type

NOTES

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) Steeghs2005Lopez2019
	V=17.42±0.01	R∼17.00±0.01	I=16.39±0.01
			Ks=16.18±0.02
Mag. Quiescent (AB) CadolleBel2009
			R>18.4
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

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Pan-STARRS1 finding chart

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