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Multiyear Ground-based Survey Photometry of Active Comet 103P/Hartley 2 and Centaur (2060) Chiron: A Tale of Two Comets in the Pre-LSST Era

  • Authors: Joseph Murtagh, Megan E. Schwamb, Michael S. P. Kelley, Matthew M. Knight, Thomas Lehmann, Giannantonio Milani, A. Fraser Gillan, Alan Fitzsimmons, Ryan R. Lyttle, Matthew M. Dobson, Carrie E. Holt, Tim Lister, Joseph P. Chatelain, Sarah Greenstreet, Quanzhi Ye, 泉志 叶, Henry H. Hsieh, Denis Bodewits, Tracy X. Chen, Richard G. Dekany, Matthew J. Graham, Steven L. Groom, George Helou, Mansi M. Kasliwal, Ashish A. Mahabal, Reed Riddle

Joseph Murtagh et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 7.

Rotational phase-folded residual light curves for 103P using the same epochs, measured rotational periods T, and light-curve amplitudes A (denoted on top of each subplot) from T. Lehmann (2025) with our survey/telescope dataset. Top: data color-shifted to ZTF-r band. Bottom: data color-shifted to ZTF-g band. Overplotted in solid blue is the best-fit single-peaked sinusoid measured.

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