V455 And
V515 And
AE Aqr
FO Aqr
V349 Aqr
XY Ari
V405 Aur
V647 Aur
HT Cam
MU Cam
DW Cnc
V709 Cas
V1025 Cen
V1033 Cas
TV Col
TX Col
UU Col
V2069 Cyg
V2306 Cyg
DO Dra
PQ Gem
V418 Gem
DQ Her
V1323 Her
V1460 Her
V1674 Her
EX Hya
NY Lup
V2400 Oph
V2731 Oph
V3037 Oph
V598 Peg
GK Per
AO Psc
HZ Pup
V667 Pup
WX Pyx
V1223 Sgr
V4743 Sgr
CC Scl
V1062 Tau
AX J1740.1
AX J1832.3
AX J1853.3
CTCV J2056
CXO J174954
IGR J04571
IGR J08390
IGR J15094
IGR J16500
IGR J16547
IGR J17014
IGR J17195
IGR J18151
IGR J18173
IGR J18308
IGR J19267
PBC J0927.8
PBC J1841.1
RX J1804
RX J2015
RX J2113
RX J2133
RX J2306
Swift J0717
Swift J1839
Swift J2006
Swift J2138

Full Catalog

Related Systems

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TX Columbae = 1H0542-407

Links to this object in VSX and in Swift BAT 157 month survey

A finding chart for TX Col

SkyView image of TX Col (see important notes).

  • Equatorial: 05h43m20.12s, -41d01m54.3s (Gaia)
  • Galactic: l=246.77, b=-29.73
Finding Chart:
Tuohy et al (1986)
Optical: G=15.6 (Gaia); X-rays: 1.2x10-11 ergs cm-2s-1 (BAT 157m; 14-195 keV), 1.8x10-11 ergs cm-2s-1 (2SXPS)
IP Credential:
***** (Ironclad) Multiple independent measurements exist for the orbital, the spin, and the beat periods, including TESS photometry.
  • Orbital: 0.2371 d = 5.691+/-0.006 hr = 20490 s, seen in X-rays and in optical spectroscopy and photometry (period from TESS photometry)
  • Spin: 0.022101 d = 31.825 min = 1909.5+/-0.2 s from TESS photometry, also seen in X-rays.
  • Others: Sideband(s) seen in optical photometry and in X-rays. TESS photometry: 0.0243722 d = 35.096 min = 2105.76+/-0.25 s
< 25 deg? (low radial velocity amplitude)
909.3 (887.8-927.1) pc (Gaia EDR3; parallax: 1.065+/-0.026 mas)


  1. Tuohy et al 1986 (X-rays, optical spectroscopy & photometry)
  2. Norton & Watson 1989a (spin equilibrium)
  3. Norton & Watson 1989b (X-rays)
  4. Buckley & Tuohy 1989 (optical spectroscopy & photometry)
  5. Buckley & Tuohy 1990 (optical spectroscopy & photometry)
  6. Hellier 1991 (disk or not?)
  7. Mouchet et al 1991 (ultraviolet)
  8. Hellier 1992 (X-ray timing)
  9. Buckley & Sullivan 1992 (optical photometry)
  10. Hellier, Garlick & Mason 1993 (X-rays - orbital modulation)
  11. Norton et al 1997 (X-rays)
  12. Cropper, Ramsay & Wu 1998 (X-ray spectroscopy)
  13. Hellier, Mukai & Osborne 1998 (X-ray spectroscopy)
  14. Ezuka & Ishida 1999 (X-ray spectroscopy)
  15. Cropper et al 1999 (post-chock model with gravity)
  16. Ferrario & Wickramasinghe 1999 (model of spin modulation)
  17. Ramsay 2000 (X-ray spectroscopy)
  18. Suleimanov, Revnivtsev & Ritter 2005 (X-ray spectroscopy)
  19. Parker, Norton & Mukai 2005 (X-ray timing)
  20. Mhlahlo et al. 2007 (optical photometry)
  21. Brunschweiger et al. 2009 (X-rays)
  22. Scaringi et al. 2010 (X-rays)
  23. Yuasa et al. 2010 (X-ray spectroscopy)
  24. Froning et al. 2012 (far ultraviolet)
  25. Godon et al. 2012 (far ultraviolet)
  26. Suleimanov, Doroshenko & Werner 2019 (X-ray spectroscopy)
  27. Rawat, Pandey & Joshi 2021 (TESS optical photometry)
  28. Littlefield et al. 2021 (optical photometry)

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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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