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
EI UMa
IGR 00234
IGR 15094
IGR 17303
Swift J0732
RX J0704
RX J1803
RX J2133
XSS 00564

Full Catalog

Related Systems

Position:

• Equatorial: 20^h40^m09.07^s, -00^d52^m16.3^s (J2000)
• Galactic: l=45.28, b=-24.42

Finding Chart:

Williams (1983)

Brigntness:

Optical mv~12 (queiscence) to 10 (flares); fx (2-10 keV)~2.6x10^(-12) ergs/cm/cm/s (ASCA)

IP Credential:

***** (Ironclad)

Periods:

• Orbital: 0.411656 d = 9.88 hr= 35567s, absorption lines of the secondary.

  HJD = 2449030.7879(11) + 0.411655601(56)E

  (Welsh, Horne & Gormer 1993b)
• Spin: 0.000383 d = 0.551 min = 33.062 s, seen in optical/UV/X-rays.

  Tmax = BJED 2445172.000042(1) + 0.00038283263840(28)E with Pdot=5.642(20)x10^-14 d d^-1

  (de Jager et al. 1994)
• Others:

Inclination:

66

Distance:

102 pc (79-144; Friedjung 1997)

References

This list is probably still incomplete; suggestions on references that should be included are welcome.

• Abada-Simon et al. 1993
• Abada-Simon et al. 1995
• Bastian, Dulk & Chanmugam 1988
• Bastian, Beasley & Bookbinder 1996
• Beskrovnaya et al. 1996
• Bookbinder & Lamb 1987
• Bowden et al. 1992
• Bruch 1991
• Brunschweiger et al. 2009
• Butters et al. 2009
• Casares et al. 1996
• Chadwick et al. 1995
• Chincarini & Walker 1981
• Choi & Dotani 2006
• Choi et al. 1999
• Clayton & Osborne 1995
• Crawford & Kraft 1956
• Cropper 1986
• Cropper, Ramsay & Wu 1998a
• Cropper et al. 1999
• de Jager 1994
• de Jager & Meintjes 1993
• de Jager et al. 1994
• de Martino, Wamsteker & Bromage 1995
• Dubus et al. 2007
• Echevarria et al. 1989
• Echevarria et al. 2008
• Eracleous & Horne 1996
• Eracleous, Patterson & Halpern 1991
• Eracleous, Halpern & Patterson 1991
• Eracleous et al. 1994
• Eracleous et al. 1996
• Ezuka & Ishida 1999
• Feldt & Chincarini 1980
• Friedjung 1997
• Henize 1949
• Ikhsanov 1995
• Ikhsanov 1998
• Ikhsanov 1999
• Ikhsanov 2000
• Ikhsanov 2001
• Ikhsanov 2006
• Ikhsanov, Jordan & Beskrovnaya 2002
• Ikhsanov & Beskrovnaya 2002
• Ikhsanov & Biermann 2006
• Ikhsanov, Neustroev & Beskrovnaya 2004
• Itoh et al. 2006
• Jameson, King & Sherrington 1980
• Joy 1954
• Kuijpers et al. 1997
• Lenouvel & Daguillon 1954
• Mauche 2006
• Mauche, Lee & Kallman 1997
• Meintjes & de Jager 2000
• Meintjes et al. 1992
• Meintjes et al. 1994
• Meintjes 2002
• Meintjes & Venter 2003
• Meintjes 2004
• Meintjes & Venter 2005
• Mouchet et al. 1995
• Osborne et al. 1995
• Parker, Norton & Mukai 2005
• Patterson 1979a
• Patterson et al. 1980
• Pearson, Horne & Skidmore 2003
• Reinsch & Beuermann 1994
• Reinsch et al. 1995
• Richman 1996
• Robinson, Shafter & Balachandran 1991
• Schenker et al. 2002
• Skidmore et al. 2003
• Stockman et al. 1992
• Szkody, Michalsky & Stokes 1982
• Tanzi, Chincarini & Tarenghi 1981
• Terada et al. 2008
• van Paradijs, van Amerongen & Karaakman 1989
• Venter & Meintjes 2006
• Venter & Meintjes 2007
• Wade 1982
• Watson, Dhillon & Shahbaz 2006 Welsh, Horne & Oke 1993a
• Welsh, Horne & Gormer 1993b
• Welsh, Horne & Gormer 1995
• Welsh & Martell 1996
• Welsh, Horne & Gormer 1998
• Wynn, King & Horne 1997
• Zinner 1938