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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 2.

Resistant mean stacked image with an equivalent exposure time of 9000 s. No coma or tail is evident by eye. The directions to the Sun, the negative of the heliocentric velocity vector (-v), north, and east, as well as a scale bar are shown. Left: the image has been stretched to better show the point-source appearance of the object. Right: the image has been rebinned, 2 × 2, and stretched to show ±2σ from the background to emphasize the lack of coma.

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