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Table 3
Summary of the different hypotheses and of the properties that they satisfy, or fail to satisfy.
| P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 | |
| on/off | ~periodic | Ṗoff < Ṗon | standard | equivalent | fast | Pon = Poff | no timing | |
| P Ṗ | ΔIpc | transition | residual | |||||
|
|
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| Neutral bodies | yes | no | yes | yes | yes | – | yes | yes |
| Porb ~ 35 days. | ||||||||
| Circular equatorial | yes | no | wrong values | yes | OK... | yes | yes | yes |
| Elliptical | yes | yes | wrong values | yes | ... for Earth-like | yes | no | yes |
| Circular inclined | yes | yes | wrong values | yes | planet only. | yes | no | yes |
| Pprec ~ 70 days. | ||||||||
| One planet | yes | yes | – | yes | – | – | yes | yes |
| but | destroyed | by | tidal | forces | ||||
| Stream of bodies | yes | yes | in Paper III | in Paper III | in Paper III | yes | yes | yes |
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