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Survey | Number of | Total USNO-B | USNO-B counterparts | UCAC2 |
objects | counterparts | with proper motion | counterparts | |
Preibisch et al. (2002) | 166 | 166 | 123 | 87 |
Ardila et al. (2000) | 20 | 20 | 12 | 1 |
Martín et al. (2004) | 28 | 23 | 14 | 0 |
Martín et al. (2009) | 7 | 6 | 3 | 0 |
Slesnick et al. (2008) | 127 | 121 | 93 | 2 |
Total | 515 | 476 | 227 | 90 |
Note. All UCAC2 sources have a proper motion measurement.
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