Table 1.
Estimates of Euclid survey parameters for different kinds of Solar System objects.
Population | Known objects | Euclid discoveries | Euclid observations | HV magnitude limits | arcsec h−1 | VIS Pixels |
---|---|---|---|---|---|---|
NEA | 24 086 |
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22.75 23.75 26.50 |
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MC | 16 662 |
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21.00 21.25 22.75 |
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MB | 937 295 |
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19.50 20.00 21.25 |
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Trojan | 8846 |
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17.00 17.25 18.25 |
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Centaur | 951 |
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14.75 15.50 18.25 |
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KBO | 2553 |
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8.25 8.75 10.00 |
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Comet | 4070 |
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18.25 19.00 22.00 |
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Notes. NEA stands for near-Earth asteroid, MC for Mars-crossing, MB for main-belt, Trojan for Jovian Trojan, and KBO for Kuiper-belt object. Column 4 (Euclid observations) shows the estimated total number of Solar System objects in the data, while Col. 3 (Euclid discoveries) shows the estimated number of previously unknown observed objects. Columns 5, 6, and 7 (HV magnitude limits) show the largest absolute magnitudes HV, for which the observation probability is 100%, 50%, and 1%, respectively. The values were determined from simulations, and they show the likelihood that an object of a given absolute magnitude appears in Euclid images so that the apparent magnitude is enough to observe the object. Column 8 (arcsec h−1) shows the median sky motion of the objects, with 25th and 75th percentiles in the subscripts and superscripts, and Col. 9 (VIS pixels) shows the corresponding streak lengths on the VIS CCD. The data are from Carry (2018) except for Col. 2, for which the numbers of currently known objects were updated by the Minor Planet Center, as of October 17, 2020.
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