A Non-principal Axis Rotation of 2008 TC3

Details A Non-principal Axis Rotation of 2008 TC3 A Non-principal Axis Rotation of 2008 TC3

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.0904s&link_type=abstract

American Astronomical Society, DPS meeting #41, #9.04

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Scientific paper

Photometric observations of the asteroid 2008 TC3 taken around 2008 Oct. 7.03 UTC revealed that it was in a non-principal axis rotation state. We constructed a numerical model of the asteroid's shape and rotation. The asteroid was in a long-axis mode of excited rotation. The two frequencies of the asteroid were 1/(99.173 s) and 1/(96.988 s), corresponding to rotation and precession, respectively.
A volume estimated from the shape model is about 28 m3, using a mean absolute magnitude H = 30.9 +/- 0.1 estimated from the photometry and assuming an albedo of 0.046 +/- 0.005 (Jenniskens et al., 2009).
A bulk density was estimated to be about 3.1 g cm-3, using M = (90 +/- 30) tons (Jennisneks et al., 2009). We will present a numerical model of the tumbling asteroid. We will compare its rotation parameters with data for other small cohesive asteroids and discuss interpretations in terms of strength and rigidity of asteroids.

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