  We present results from a two week multi-longitude photometric campaign on TV
Col held in 2001 January. The data confirm the presence of a permanent positive
superhump found in re-examination of extensive archive photometric data of TV
Col. The 6.3-h period is 15 per cent longer than the orbital period and obeys
the well known relation between superhump period excess and binary period. At
5.5-h, TV Col has an orbital period longer than any known superhumping
cataclysmic variable and, therefore, a mass ratio which might be outside the
range at which superhumps can occur according to the current theory. We suggest
several solutions for this problem.
