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Table 1
Comparison of the COCD and MWSC surveys.
| COCD | MWSC | |
|
|
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| Basic catalogue | Hipparcos+Tycho | PPMXL |
| The tool catalogue | ASCC-2.5 | 2MAst |
| Number of stars | 2.5 mln. | 470 mln. |
| Limiting magnitude | V = 12.5 | Ks = 15.3 |
| Basic stellar data | α,δ,μ,BV | α,δ,μ,JH K s |
| Additional stellar data | JHKs, Sp, RV | BV, Sp, RV |
| Limiting distance | 8 kpc | >20 kpc |
| Completeness | 0.85 kpc | 1.8 kpc |
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