Table 2
Thermophysical properties of asteroid Phaethon derived by the TPM from different thermal datasets based on two pole solutions.
| D | Γ | pV | Roughness |
|
r | Dataset |
| [km] | [J m–2 s–1/2 K–1] | [au] | ||||
|
|
||||||
| Pole 1: λ = 319°, β = −39° | ||||||
6.0 |
− | 0.09 |
− | 1.0 | 1.0 | IRAS |
4.6 |
300 |
0.145 |
Medium | 1.1 | 1.1 | Green et al. (1985) |
5.1 |
600 |
0.122 |
Medium | 2.8 | 1.1 | Spitzer |
| 5.1 |
600 |
0.122 |
Medium | 2.9 | ~1.0 | All |
5.1 |
700 |
0.12 |
Medium | 2.9 | ~1.0 | VS-TPM All |
| Pole 2: λ = 84°, β = −39° | ||||||
5.6 |
− | 0.10 |
− | 0.7 | 1.0 | IRAS |
5.3 |
4000 |
0.13 |
High | 1.2 | 1.1 | Green et al. (1985) |
| 5.2 |
6500 |
0.14 |
− | 2.5 | 1.1 | Spitzer |
| 4.9 |
7500 |
0.15 |
− | 3.0 | ~1.0 | All |
Notes. We also include the results based on the varied shape TPM approach (only first pole solution). The table provides the volume-equivalent diameter D, thermal inertia Γ, visual geometric albedo pV, macroscopic surface roughness, the best-fit , heliocentric distance r of Phaethon during its observation, and the thermal dataset used.
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