* Zuber, M.T., D.E. Smith, A.F. Cheng, J.B. Garvin, O. Aharonson, T.D. Cole, P.J. Dunn, Y. Guo, F.G. Lemoine, G.A. Neumann, D.D. Rowlands, and M.H. Torrence, The Shape of 433 Eros from the NEAR-Shoemaker Laser Rangefinder, Science, 289, 1788-1793, 2000.

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NLR190 is a spherical harmonic model to degree and order 24 based on approximately 5 million Eros radii collected by the NLR through day 190, year 2000. Because of its deviation from sphericity, on Eros one degree varies from about 54 to 307 m.

The table below shows the "best-fit" triaxial ellipsoid to model NLR190. This ellipsoid fits the observed shape of Eros as described to NLR190 to 1028 in an RMS sense. This is not a very good fit due to the fact that Eros deviates significantly from a simple ellipsoidal shape. Deviations are due to collisions, craters, etc.

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433 Eros Tri-axial Ellipoid Parameters

Parameter	Value	Uncertainty (+/-)
Tri-axial Ellipsoid
a(m)	20591	40
b(m)	5711	40
c (m)	5332	50
Ellipsoid Offset of center of figure from center of mass
Dx	470	20
Dy	720	20
Dz	-202	30
Direction of ellipsoidal axes**
a (lat/lon E), deg	0/349	5
b (lat/lon E), deg	82/259	5
c (lat/lon E), deg	8/259	5

**Estimates of the directions of the axes are inaccurate due to the inherent deviation in asteroid shape from a triaxial ellipsoid. Results suggest that the major axis is approximately 11° away from the X-axis of the coordinate system and the "polar" axis (b) is about 8° from the Z-axis.