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Table 1
Physical properties of (31) Euphrosyne based on ADAM shape modeling and the Genoid orbit solution of the satellite: sidereal rotation period P, spin-axis ecliptic J2000 coordinates λ and β, volume-equivalent diameter D, dimensions along the major axis a, b, c, their ratios a∕b and b∕c, mass M, and bulk density ρ.
| Parameter | Unit | Value |
|---|---|---|
| P | h | 5.529595 ± 10−6 |
| λ | deg. | 94 ± 5 |
| β | deg. | 67 ± 3 |
| D | km | 268 ± 6 |
| a | km | 294 ± 6 |
| b | km | 280 ± 10 |
| c | km | 248 ± 6 |
| a∕b | 1.05 ± 0.03 | |
| b∕c | 1.13 ± 0.04 | |
| M | 1019 kg | 1.7 ± 0.3 |
| ρ | kg m−3 | 1665 ± 242 |
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