IPs

AE Aqr
FO Aqr
XY Ari
V405 Aur
HT Cam
MU Cam
DW Cnc
BG CMi
V709 Cas
V1025 Cen
TV Col
TX Col
UU Col
V2306 Cyg
YY Dra
PQ Gem
DQ Her
EX Hya
NY Lup
V2400 Oph
GK Per
AO Psc
WX Pyx
V1223 Sgr
V1062 Tau
RX J2133

Related Systems

Candidates

Position

• Equatorial: 18^h55^m02.0^s, -31^d09^m48^s (J2000)
• Galactic: l=4.96, b=-14.35

Finding Chart:

Steiner et al (1981)

Brigntness:

Optical ; fx (2-10 keV)~8.8x10^(-11) ergs/cm/cm/s (ASCA)

Periods:

• Orbital: 0.140244 d = 3.365856 hr = 12117.1 s

  T(max) = HJD 2444749.986(3) + 0.1402440(4) E

  (Jablonski & Steiner 1988)
• Spin: 0.00863 d = 12.43 min = 745.63 s, seen in X-rays and (occasionally) in the optical.

  Tmax = HJD 2445619.1772(2) + 0.00863(5) E

  (Osborne et al 1985) is now pitifully out of date --- is there a better one somewhere?
  See the canonical spin profiles
• Others: The 794.379 s sideband is more prominent than the spin period in the optical.

  Tmax = HJD 2444508.47235(4) + 0.009194204(2) E + 1.28(7)x10^-13 E²

  (Jablonski & Steiner 1988)

Inclination:

16-40 (Watts et al. 1985).

Distance:

510 pc (Beuermann et al. 2004)

One of the brightest IPs, certainly in the X-rays, but appears to have been neglected.

References

• Beardmore, Osborne & Hellier 2000
• Beuermann et al. 2004
• Bonnet-Bidaud, Mouchet & Motch 1982
• Cropper 1986
• Ezuka & Ishida 1999
• Garnavich & Szkody 1988
• Hellier 1991
• Hellier 1992
• Hellier & Mukai 2004
• Hellier, Garlick & Mason 1993
• Hellier, Mukai & Osborne 1998a
• Jablonski & Steiner 1987
• King & Williams 1983
• Mukai et al. 2003
• Norton & Watson 1989b
• Norton, Beardmore & Taylor 1996
• Osborne et al. 1985
• Padmini et al. 1985
• Parker, Norton & Mukai 2005
• Patterson 1981
• Penning 1985
• Ramsay 2000
• Revnivtsev et al. 2004
• Richman 1996
• Steiner et al. 1981
• Suleimanov, Revnivtsev & Ritter 2005
• Taylor et al. 1997
• van Amerongen & van Paradijs 1989
• van Amerongen, Augusteijn & van Paradijs 1987
• Warner 1986
• Warner & Cropper 1984
• Watts et al. 1985
• Welsh & Martell 1996