Table 3 Differential training—mean absolute and relative acceleration errors for heterogeneous bodies at three altitudes (low, medium, and high).

From: Geodesy of irregular small bodies via neural density fields

 

Sampling altitudes

Absolute errors

Relative errors

Heterogeneous body

hlow[m]

hmed[m]

hhi[m]

ϵlow[m/s2]

ϵmed[m/s2]

ϵhi[m/s2]

ϵlow[%]

ϵmed[%]

ϵhi[%]

Bennu

14.1

28.2

70.4

4.07e-08

1.19e-08

7.67e-09

0.10

0.03

0.031

Itokawa

14

28

70.1

2.49e-08

1.45e-08

1.01e-08

0.12

0.08

0.091

Planetesimal

125

250

625

3.55e-08

2.29e-08

1.84e-08

0.08

0.06

0.071

  1. Latitudes for validation are chosen depending on the body size as a fraction of its diameter.
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