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Table 3
Total number of single stars for each spectral type, along with the percentage of those that fall below each relative parallax error limit; e.g., 68% of M-type stars have a relative parallax error better than 20%.
| Spec. type | Total | σϖ/ϖ< 1 | σϖ/ϖ< 0.2 | σϖ/ϖ< 0.05 |
|
|
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| O | 3.3 × 102 | 87.5 | 57.5 | 29.2 |
| B | 3.4 × 105 | 74.0 | 33.0 | 12.2 |
| A | 5.3 × 106 | 79.7 | 38.0 | 14.7 |
| F | 1.2 × 108 | 66.2 | 20.1 | 6.1 |
| G | 2.0 × 108 | 67.4 | 20.0 | 5.7 |
| K | 1.5 × 108 | 82.4 | 30.9 | 8.6 |
| M | 4.5 × 107 | 98.1 | 68.0 | 18.6 |
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