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Table 3
ATPM derived properties of (1862) Apollo using the Lebofsky et al. (1981) thermal-infrared observations at the 3-σ confidence level.
| Shape variant | “Original” | “Stretched” | “New” |
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|
|||
| Axis ratios (a:b:c) | 2.16:1.82:1.00 | 1.83:1.54:1.00 | 1.94:1.65:1.00 |
| A/D ratio | 1.45 | 1.37 | 1.37 |
| Light-curve relative-χ2 | 2.59 | 3.32 | 2.35 |
| Effective diametera (km) | 1.68 ± 0.09 | 1.54 ± 0.07 | 1.55 ± 0.07 |
| Radar observed maximum | |||
| equatorial diameterb (km) | 2.07 ± 0.07 | 2.07 ± 0.07 | 2.07 ± 0.07 |
| ATPM maximum | |||
| equatorial diametera (km) | 2.43 ± 0.13 | 2.12 ± 0.09 | 2.13 ± 0.09 |
| Geometric albedoa | 0.17 ± 0.02 | 0.21 ± 0.02 | 0.20 ± 0.02 |
| Thermal inertiac (J m-2 K-1 s−1/2) | 200  |
140  |
140  |
| Roughness fractiona (%) | 60 ± 30 | 60 ± 30 | 60 ± 30 |
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