Table 1
Influence of the Yarkovsky effect and cometary-type NG forces on changes in semi-major axis: daY /dt and daNG/dt.
| Object | a (AU) | e | D (km) | ρ (kg/m3) | |daY/dt| (AU/Myr) | daNG/dt (AU/Myr) |
|---|---|---|---|---|---|---|
| 133P | 3.16 | 0.161 | 3.8 | 1300 | 1.178 × 10−3 | +3.2 × 10−3 |
| 176P | 3.195 | 0.193 | 4 | 1300 | 1.126 × 10−3 | −1.2 × 10−2 |
| 238P | 3.163 | 0.253 | 0.8 | 1000 | 7.569 × 10−3 | −9.9 × 101 |
| 259P | 2.726 | 0.342 | 0.6 | 1000 | 1.1523 × 10−2 | +6.7 × 101 |
| 288P | 3.049 | 0.201 | 1.2 | 2500 | 2.005 × 10−3 | +9.5 × 10−3 |
| 311P | 2.189 | 0.115 | 0.4 | 3300 | 5.231 × 10−3 | +3.1 × 10−1 |
| 313P | 3.161 | 0.235 | 2 | 1000 | 3 × 10−3 | +5.4 × 101 |
| 324P | 3.096 | 0.154 | 1.1 | 1000 | 5.334 × 10−3 | −1.4 × 102 |
| 331P | 3.004 | 0.042 | 3.54 | 1600 | 1.029 × 10−3 | +2.1 × 10−1 |
| 354P | 2.29 | 0.125 | 0.12 | 3000 | 1.8797 × 10−2 | +6.5 × 102 |
| 358P | 3.155 | 0.236 | 0.64 | 1500 | 6.26 × 10−3 | −2.5 × 103 |
Notes. Cometary-type NG forces can change the semi-major axis of the bodies much more effectively than the Yarkovsky effect when Marsden coefficients have values higher than 10−8 (AU/day2); see Table 2. The Yarkovsky effect was calculated using Equation (5) from Dermott et al. (2021) (followed by the Greenberg et al. (2020) Equation (3)), while the values for cometary-type changes were taken from Table 3 of Hui & Jewitt (2017).
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