SuperWASP observations of the transiting extrasolar planet XO-1b
- Wilson, D. M.
- Enoch, B.
- Christian, D. J.
- Clarkson, W. I.
- Cameron, A. Collier
- Deeg, H. J.
- Evans, A.
- Haswell, C. A.
- Hellier, C.
- Hodgkin, S. T.
- Horne, K.
- Irwin, J.
- Kane, S. R.
- Lister, T. A.
- Maxted, P. F. L.
- Norton, A. J.
- Pollacco, Don
- Skillen, I.
- Street, R. A.
- West, Richard G.
- Wheatley, P. J.
DOIAbstract
We report on observations of 11 transit events of the transiting extrasolar planet XO-1b by the SuperWASP North observatory. From our data, obtained during 2004 May-September, we find that the XO-1b orbital period is 3.941634 +/- 0.000137 days, the planetary radius is 1.34R(J) +/- 0.12R(J), and the inclination is 88.degrees 92 +/- 1.degrees 04, in good agreement with previously published values. We tabulate the transit timings from 2004 SuperWASP and XO data, which are the earliest obtained for XO-1b and which will therefore be useful for future investigations of timing variations caused by additional perturbing planets. We also present an ephemeris for the transits
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