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On the Rotation Period and Shape of the Hyperbolic Asteroid 1I/‘Oumuamua (2017 U1) from Its Lightcurve

  • Authors: Matthew M. Knight, Silvia Protopapa, Michael S. P. Kelley, Tony L. Farnham, James M. Bauer, Dennis Bodewits, Lori M. Feaga, and Jessica M. Sunshine

2017 The Astrophysical Journal Letters 851 L31.

  • Provider: AAS Journals

Caption: Figure 3.

Left: normalized radial profiles of ‘Oumuamua in a single 300 s image (blue crosses), in the median stacked image (black circles), and of a field star in a 3 s exposure trailed at the object’s rate of motion (red line). Despite the star’s slight trailing (0.5 pixel), the profiles are consistent with ‘Oumuamua appearing point like. Right: counts per pixel in 2 pixel wide annuli. Each individual image is plotted as black crosses, and the red circles show the average and standard deviation of all 30 images.

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