On the Rotation Period of (90377) Sedna

  title={On the Rotation Period of (90377) Sedna},
  author={B. Scott Gaudi and Krzysztof Zbigniew Stanek and Joel D. Hartman and Matthew J. Holman and Brian McLeod},
  journal={The Astrophysical Journal Letters},
  pages={L49 - L52}
We present precise, ~1%, r-band relative photometry of the unusual solar system object (90377) Sedna. Our data consist of 143 data points taken over eight nights in 2004 October and 2005 January 2005. The rms variability over the longest contiguous stretch of five nights of data spanning 9 days is only ~1.3%. This subset of data alone constrains the amplitude of any long-period variations with period P to be A ≲ 1%(P/20 days)2. Over the course of any given ~5 hr segment, the data exhibit… 


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