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Table 3.
Physical parameters of NGC 6611.
| Right ascension (α) | 274.67 ± 0.01 deg |
| Declination (δ) | –13.78 ± 0.01 deg |
| Proper motion (μα*) | 0.21 ± 0.01 mas yr−1 |
| Proper motion (μδ) | –1.59 ± 0.01 mas yr−1 |
| Radial velocity (vR) | 4.7 ± 3.5 km s−1 |
| 1D velocity dispersion(1) (σ1D) | 1.8 ± 0.2 km s−1 |
| Median outward velocity(1) (vout) | 0.90 ± 0.23 km s−1 |
| Parallax (ϖ) | 0.587 ± 0.003 mas |
| Distance (d) | 1.706 ± 0.008 kpc |
| Young population | |
| Mass | 5-10 × 103 M⊙ |
| Half-mass radius (rhm) | 1.5–2.0 pc |
| Age | 1.3 ± 0.2 Myr |
| Extinction (AV) | 3.5 ± 0.1 mag |
| Old population | |
| Mass | – |
| Half-mass radius | 2.5–3.0 pc |
| Age | 7.6 ± 0.4 Myr |
| Extinction (AV) | 2.0 ± 0.1 mag |
References. (1) Kuhn et al. (2019).
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