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Table 2
1-σ error bars on the masses given by least-squares method using different sets of simulated observations, using m1 = 870.3 km3 s-2, m2 = 101.4 km3 s-2, m3 = 0.039 km3 s-2 and m4 = 0.021 km3 s-2.
| Set of simulated | 1-σ error bars on the masses (km3 s-2) | |||
| observations | ||||
| number of simulated observations | ||||
| Pluto | Charon | Nix | Hydra | |
|
|
||||
| 1992–2006 | 1.28 | 0.51 | 0.024 | 0.036 |
| 72 | 16 | 17 | ||
| 1992–2014 | 0.82 | 0.28 | 0.010 | 0.019 |
| 125 | 68 | 69 | ||
| 1992–2006+NH | 0.27 | 0.072 | 0.012 | 0.0028 |
| 129 | 106 | 124 | ||
| 1992–2014+NH | 0.25 | 0.045 | 0.0076 | 0.0026 |
| 181 | 158 | 176 | ||
| 1992–2014+extended NH | 0.19 | 0.039 | 0.0070 | 0.0024 |
| 181 | 186 | 233 | ||
Notes. No new observations of Charon is simulated for the extended phase of New Horizons.
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