Page History
The catalogues were matched sequentially in the order listed. Selected object parameters were transferred to existing records and then new objects added.
Unless otherwise noted, only objects that matched within 2 arcseconds were retained.
| Step | GSC2 objects | Catalogue Matched | Catalogue Objects | Objects Matched | Objects Added |
|---|---|---|---|---|---|
| 1 | 945,443,930 | GAIA dr1 | 1,142,679,769 | 685,921,019 | 456,758,750 |
| 2 | 1,402,202,680 | APASS dr9 | 61,176,401 | 46,867,631 | 0 |
| 3 | 1,402,202,680 | UCAC5 | 107,758,513 | 107,758,513 | 0 |
| 4 | 1,402,202,680 | 2MASS | 496,911,362 | 449,162,648 | 47,748,714 |
| 5 | 1,449,951,394 | SDSS dr13 | 469,050,976 | 161,761,097 | 307,289,879 |
| 6 | 1,757,241,273 | VISTA VHS dr4 | 1,155,634,198 | 430,865,659 | 631,411,390 |
| 7 | 2,388,652,663 | VISTA VIKING dr2 | 46,270,162 | 5,820,583 | 40,449,939 |
| 8 | 2,429,102,602 | VST ATLAS dr3 | 105,132,174 | 49,708,717 | 55,423,457 |
| 9 | 2,484,526,059 | KIDS dr3 | 48,736,590 | 17,196,222 | 31,540,368 |
| 10* | 2,516,066,427 | PanSTARRS dr1-best | 1,919,106,885 | ||
| 11 |
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