IGR J18308-1232 = 1RXS J183045.2-123225

Links to this object in VSX and in Swift BAT 157 month survey

A finding chart for IGR J18308-1232

SkyView image of IGR J18308-1232 (see important notes).

Position

Equatorial: 18^h30^m49.94^s, -12^d32^m19.1s (Gaia)
Galactic: l= 19.44, b=-1.20

Finding Chart:

Thorstensen & Halpern (2013)

Brigntness:

Optical: G=17.6 (Gaia); X-rays: 1.7x10^-11 ergs cm^-2s^-1 (BAT 157m; 14-195 keV), 7.8x10^-12 ergs cm^-2s^-1 (4XMM-DR11)

IP Credential:

**** (Confirmed): This hard X-ray selected CV has an optical spectroscopic (orbital) period of 5.4 hr (aliases are not completely excluded) and the X-ray (spin) period of a 1820 s, and thus has been confirmed as an IP.

Periods:

Orbital: 0.2239 d = 5.374 h = 19350 s ?
Spin: 0.0211 d = 30.3 min = 1820 s
Others: 2400 s (\omega - 2\Omega?)

Inclination:

Distance:

2220 (1790-2730) pc (Gaia EDR3; parallax: 0.488+/-0.121 mas)

References

Masetti et al. 2009 (optical spectroscopy)
Butler et al. 2009 (optical spectroscopy)
Tomsick et al. 2009 (X-ray imaging)
Scaringi et al. 2010 (X-rays)
Bernardini et al. 2012 (X-rays)
Thorstensen & Halpern 2013 (optical spectroscopy & photometry)

Please send your comments, suggestions etc. to Koji.Mukai@nasa.gov and/or Koji.Mukai@umbc.edu

National Aeronautics and Space Administration

Goddard Space Flight Center

IPs

Full Catalog

Related Systems

IGR J18308-1232 = 1RXS J183045.2-123225

References