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Table 5
Accuracy of measurements for numbered asteroids from the AstDyS2 database.
| Type | Name | Number of | Percentage of | Accuracy | |
| measurement | accepted measurement | ||||
|
|
|||||
| C | CCD | 79 569 190 | 99.49% | 0.388 | arcsec |
| S | Wise | 1 526 466 | 99.86% | 0.583 | arcsec |
| S | Hubble Space Telescope | 867 | 96.54% | 0.585 | arcsec |
| S | Spitzer | 48 | 33.33% | 1.673 | arcsec |
| A | B1950 to J2000 | 632 428 | 82.17% | 1.170 | arcsec |
| c | Corrected CCD observation | 423 792 | 99.70% | 0.507 | arcsec |
| P | Photographic | 346 947 | 93.38% | 1.084 | arcsec |
| T | Meridian/transit circle | 26 968 | 100.00% | 0.250 | arcsec |
| M | Micrometer | 12 081 | 94.56% | 1.742 | arcsec |
| X | Discovery observation | 9520 | 0.81% | 0.898 | arcsec |
| H | Hipparcos observation | 5494 | 100.00% | 0.148 | arcsec |
| E | Occultations | 1736 | 100.00% | 0.085 | arcsec |
| R | Ranging | 612 | 96.41% | 3.325 | km |
| R | Doppler | 432 | 99.07% | 6.660 | km s-1 |
| V | Roving observer | 372 | 49.73% | 0.822 | arcsec |
| e | Encoder | 16 | 100.00% | 0.558 | arcsec |
| n | video frame | 12 | 100.00% | 0.319 | arcsec |
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