Table 2.
Summary table.
| Mission | Ntotal | Nsso | Ntarget | N> limit |
|---|---|---|---|---|
| Herschel | 337 328 | 114 746 | 2010 | 3492 |
| HST | 134 974 | 14 367 | ∼80 000 | ∼32 000 |
| XMM-Newton (OM) | 25 138 | 21 613 | 0 | 985 |
Notes. Columns are: total number of potential asteroid detections (i.e. number of distinct observation/asteroid position pair) (Ntotal), number of distinct objects (Nsso), number of targeted observations (Ntarget) and number of serendipitous detections theoretically above instrumental limiting magnitude or flux (N> limit).
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