National Aeronautics and Space Administration

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
V2069 Cyg
V2306 Cyg
YY Dra
PQ Gem
DQ Her
EX Hya
NY Lup
V2400 Oph
GK Per
AO Psc
WX Pyx
V1223 Sgr
V1062 Tau
EI UMa
IGR 00234
IGR 15094
IGR 17303
Swift J0732
RX J0704
RX J1803
RX J2133
SDSS J233325
XSS 00564

Full Catalog

Related Systems

Position

• Equatorial: 07^h51^m17.33^s, +14^d44^m23.9^s (J2000, star 1)
• Galactic: l=206.06, b=+19.77

Finding Chart:

Mason et al. (1992)

Brigntness:

Optical ; fx (2-10 keV)~2.3x10^-11 ergs/cm²/s (ASCA)

IP Credential:

***** (Ironclad)

Periods:

• Orbital: 0.211636 d = 5.1926 hr= 18693.4 s

  HJD=2449333.984(4)+0.216359(3)E

  (Hellier 1997a) for red-to-blue crossing of the emission lines, though there is some uncertainty over the cycle count.
• Spin: 0.009646 d = 13.89 min = 833.41 s, seen in X-rays and optical.

  TDB_dip = 2450103.152344(53) + 0.0096460639(4)E + 4.379(26)x10^-13E²

  (Evans, Hellier & Ramsay (2006); Note that there is a typographical error in this ephemeris as published in MNRAS. The extraneous "4" after "(26)" should be ignored: Evans 2008, private communication.)
  See the complex X-ray spin pulse shapes.
• Others: 14.5 min sideband period.

Inclination:

Low? (little orbital modulation)

Distance:

References

• Anzolin et al. 2010
• Belloni et al. 1998
• Brunschweiger et al. 2009
• Cash, Howell & Rosen 1998
• Cropper, Ramsay & Wu 1998a
• Cropper et al. 1999
• de Martino et al. 2004
• Dhillon et al. 1997
• Duck et al. 1994
• Evans, Hellier & Ramsay 2006
• Evans & Hellier 2007
• Ezuka & Ishida 1999
• Haberl & Motch 1995
• Hellier 1997a
• Hellier 1999
• Hellier, Ramseyer & Jablonski 1994
• Hellier, Mukai & Osborne 1998a
• Hilditch & Bell 1994
• Howell et al. 1997
• Ishida 1991
• James et al. 2002
• Kiziloglu et al. 1998
• Mason 1997
• Mason et al. 1992
• Parker, Norton & Mukai 2005
• Piirola, Hakala & Coyne 1993
• Potter et al. 1997
• Rosen, Mittaz & Hakala 1993
• Scaringi et al. 2010
• Somov, Somova & Najdenov 1998a
• Somov, Somova & Najdenov 1998b
• Stavroyiannopoulos et al. 1997
• Suleimanov, Revnivtsev & Ritter 2005
• Vaeth, Chanmugam & Frank 1996
• Yuasa et al. 2010