UltraCompCAT A Catalogue of Ultra-Compact and Short Orbital Period X-ray Binaries

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ID# 34

SAX J1806.5-2215

SWIFT J1806.5-2223, SAX J1806-221

Candidate UCXB

RA                 Dec    

[hh:mm:ss.ss]          [dd:mm:ss.ss]

18:06:32.17  -22:14:17.32

                     [ICRS]

ℓ                      b

[deg]                            [deg]

008.159359  -00.699213

Year of discovery: 1996-1997

(intzand1999)

Basic data
Location in Globular Cluster
Type of accretor NS Transient (Long outburst)
Distance [kpc]
(other distances)
 		<4.8 (H), <6.2 (He)
Galloway2020
Cornelisse2002a
z [kpc] -0.08 Galloway2020
Orbital period (Porb) [min]
Porb determination method
Thermonuclear X-ray burst Short-B
IB 		Cornelisse2002a
IntZand2019
Peak X-ray flux [erg s-1 cm-2]
(2 - 10 keV)		 6.60E-10 delsanto2012
NH [x1022 cm-2] 4.2±0.6 delsanto2012
E(B-V) [mag]
Magnitude K=17.25±0.03
qK>18.2		 Kaur2017

 Kaur2017
Proposed companion


NOTES
The source was still detected by INTEGRAL in 2015 October (Sguera2015).

Spectral data
UV
Optical
X-ray Featureless Degenaar2011b

Peak Optical/NIR magnitudes
If the system is transient, quiescent magnitudes are indicated with a "q" superindex
Kaur2017 Shaw2017
K=17.25±0.03, qK>18.2, H=17.94±0.06, K_s = 17.22±0.02, qH>19.00
Aladin finding chart
Scroll to zoom. Set survey image in "Manage layers"
Default image: DSS2 Red
SAX J1806.5-2215 in Simbad

Pan-STARRS1 finding chart

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PS1 Finding chart PS1 Finding chart

References to finding charts

Shaw2017Kaur2017


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: 09 May 2023.