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

Home Reviews IPs & Candidates Issues Links Gallery News

UU Columbae = RX J0512.2-3241

Link to this object in VSX

A finding chart for UU Col

SkyView image of UU Col (see important notes).

  • Equatorial: 05h12m13.23s, -32d41m39.7s (Gaia)
  • Galactic: l=235.64, b=-34.09
Finding Chart:
Burwitz et al (1996).
Optical: G=17.6 (Gaia); X-rays: 2.8x10-12 ergs cm-2s-1 (4XMM-DR11)
IP Credential:
**** (Confirmed) The spin period is firmly established from X-ray and optical (including polarimetric) observations. However, there is no spectroscopic or precise measurement of the orbital period, likely around 3.45 hr.
  • Orbital: 0.144 d = 3.45 hr = 12400 s, from optical photometry (?).
  • Spin: 0.009994 d = 14.39 min = 863.5 s, from optical photometry.
  • Others: Hint of 928.1 s sideband period.
2550 (2150-2990) pc (Gaia EDR3; parallax: 0.341+/-0.070 mas)


  1. Burwitz et al. 1996 (ROSAT discovery and optical follow-up)
  2. de Martino et al. 2006 (X-rays)
  3. Evans & Hellier 2007 (X-rays - soft component search)
  4. de Martino 2007 (X-rays)
  5. Brunschweiger et al. 2009 (X-rays)
  6. Katajainen et al. 2010 (optical polarimetry)
  7. Anzolin et al. 2010 (X-ray flickering) Sep
  8. Barrett et al. 2017 (radio)

Home Reviews IPs & Candidates Issues Links Gallery News

Please send your comments, suggestions etc. to Koji.Mukai@nasa.gov and/or Koji.Mukai@umbc.edu
NASA Logo, National Aeronautics and Space Administration