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

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ID# 23

XTE J1856+053

( Torres2007a )

RA     [J2000]     DEC

[]          []

18:56:42.92  +05:18:34.30

ℓ                      b

[deg]                            [deg]

038.2584339  +01.24875005

Year of discovery: 1996  
( Marshall1996 )

# of outbursts after discovery: 2

Basic data

Distance [kpc]
Distance to the plane (z) [kpc]
Orbital period (Porb) [h]
Peak X-ray flux [erg s-1 cm-2]
Outburst magnitude (AB) Ks=18.28±0.05 Torres2007a
Quiescent magnitude (AB) Ks=20.1±0.3
E(B-V) [mag] 5.113 Schlafly2011
Spectral type


XTE J1856+053 has shown two consecutive outbursts with ∼70 days interval between them ( Sala2008 ). This behaviour was seen in the 1996 and 2007 outbursts ( Levine2007 , Krimm2007 , Sala2008 ). This also appeared in the the recent 2015 outburst ( Suzuki2015 , Negoro2015 ). A new outburst occurred in Feb 2020 ( Negoro2020 )

Optical/NIR magnitudes

Mag. Outburst (AB)
Mag. Quiescent (AB)
Aladin finding chart
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Default image: DSS2 Red
XTE J1856+053 in Simbad

Pan-STARRS1 finding chart

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PS1 Finding chart PS1 Finding chart

Finding charts

Orientation: North up, East left. Object marked
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Finding chart reference: Torres2007a Lopez2019

Finding chart
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.