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Table 2
Statistics on catalogues used for the reduction of the Phoebe observations.
| Code | Catalogue | Number | Percentage | Time-span |
|
|
||||
| a | USNO A1.0 | 8 | 0.2% | 2000–2000 |
| b | USNO SA1.0 | 3 | 0.1% | 2000–2000 |
| c | USNO A2.0 | 384 | 11.4% | 1998–2012 |
| d | USNO SA2.0 | 12 | 0.4% | 2001–2003 |
| g | Tycho-2 | 236 | 7.0% | 2000–2011 |
| l | ACT | 5 | 0.1% | 2000–2000 |
| o | USNO B1.0 | 272 | 8.1% | 2005–2012 |
| r | UCAC2 | 1725 | 51.2% | 1996–2012 |
| t | UCAC3-beta | 6 | 0.2% | 2011–2012 |
| u | UCAC3 | 76 | 2.3% | 2010–2012 |
| v | NOMAD | 95 | 2.8% | 2008–2009 |
| w | CMC | 2 | 0.1% | 2010–2010 |
| z | GSC (generic) | 27 | 0.8% | 2000–2000 |
| Unknown | 516 | 15.3% | 1898–2010 | |
Notes. Code is similar to MPC flag.
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