IPs

V455 And
V515 And
AE Aqr
FO Aqr
XY Ari
V405 Aur
V647 Aur
HT Cam
MU Cam
DW Cnc
BG CMi
V709 Cas
V1033 Cas
V1025 Cen
TV Col
TX Col
UU Col
V2069 Cyg
V2306 Cyg
YY Dra
PQ Gem
V418 Gem
DQ Her
V1323 Her
EX Hya
NY Lup
V2400 Oph
V2731 Oph
V598 Peg
GK Per
AO Psc
V667 Pup
WX Pyx
V1223 Sgr
CC Scl
V1062 Tau
EI UMa
AX J1740.1
AX J1740.2
AX J1853.3
IGR J08390
IGR J15094
IGR J16500
IGR J16547
IGR J17195
IGR J18173
IGR J18308
IGR 19267
RX J2133

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FO Aquarii = H2215-086

A finding chart for FO Aqr

SkyView image of FO Aqr (see important notes).

Position
  • Equatorial: 22h17m55.49s, -08d21m05.4s (J2000)
    The SIMBAD server returns 22h17m57.1s, -08d21m11.2s --- this is 25 arcsec or so off. The above is from the Downes & Shara (1993).
  • Galactic: l=53.00, b=-49.16
Finding Chart:
Patterson & Steiner (1983)
Brigntness:
Optical ; fx (2-10 keV)~3.5x10^(-11) ergs/cm/cm/s (ASCA)
IP Credential:
***** (Ironclad)
Periods:
  • Orbital: 0.202 d = 4.84944 hr = 14738 s, see in optical and X-rays.
    HJD = 2444782.869(2) + 0.2020596(1)E
    (Patterson et al (1998b)) for the orbital dip.
  • Spin: 0.01452 d = 20.9 min = 1254s, seen in optical photometry, optical spectroscopy and X-rays.
    HJD = 2444782.9168 + 0.014519035E + 7.002x10^(-13)E^2 - 1.556x10^(-18)E^3
    (Erratum to Patterson et al (1998b)) works for 1981-1987. However, given the erratic history of this system, a continuing monitoring would be prudent.
  • Others: spin-orbit and 2spin-orbit seen in X-rays; spin-orbit and possibly spin+orbit seen in optical photometry.
Inclination:
~65 deg? (has grazing eclipse).
Distance:
450 (+240, -160) pc (Pretorius & Mukai (2014))

References


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