V455 And
V515 And
AE Aqr
FO Aqr
XY Ari
V405 Aur
V647 Aur
HT Cam
MU Cam
DW Cnc
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
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

Full Catalog

Related Systems

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PQ Geminorum = RE0751+14

A finding chart for PQ Gem

SkyView image of PQ Gem (see important notes).

  • Equatorial: 07h51m17.33s, +14d44m23.9s (J2000, star 1)
  • Galactic: l=206.06, b=+19.77
Finding Chart:
Mason et al. (1992)
Optical ; fx (2-10 keV)~2.3x10-11 ergs/cm2/s (ASCA)
IP Credential:
***** (Ironclad)
  • Orbital: 0.211636 d = 5.1926 hr= 18693.4 s
    (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.
    TDBdip = 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.
Low? (little orbital modulation)
510 (+280, -180) pc (Pretorius & Mukai (2014))


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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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