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Visual and Photographic Orbital Mean Light Curves for the Recurrent Nova T Coronae Borealis

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Michael PeelB

17 Manor Close, Hoghton, Preston PR5 0EN, England




Mean orbital light curves of T CrB at quiescence are derived from previously unreduced 1872-1904 visual estimates of T. W. Backhouse and partly concurrent Harvard photographic observations. They agree in showing ellipsoidal minima with different depths, an irregularity near where hot-spot influence might be expected, and primary minima not midway between secondary minima. A marginally refined orbital period of 227.52 +/- 0.05 days is suggested.


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