CWNU 519
(OCSN 108)
0.49
UTI
0.75
CN
0.23
Cdens
1.0
CC3
0.23
Clit
1.0
Cdup
Nm (P>50%)
103
Core radius and density
2.1 [pc], 1.1 [pc-2]
- CN 0.75 Rich
- Cdens 0.23 Very loose
- CC3 1.0 Very high quality
- Clit 0.23 Rarely studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
CWNU 519 is a rich, very loose object of very high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 313.771 | 56.71 | 3.048 | 4.912 | 3.469 | -6.802 |
| Yan et al. | 2026 | 313.932 | 56.755 | 3.072 | 5.012 | 3.49 | â |
| Yang et al. | 2025 | 313.932 | 56.755 | â | â | â | â |
| Swiggum et al. | 2024 | 313.932 | 56.755 | 3.072 | 5.012 | 3.49 | -7.44 |
| Hunt & Reffert | 2024 | 313.932 | 56.755 | 3.072 | 5.012 | 3.49 | -10.605 |
| Cavallo et al. | 2024 | 314.074 | 57.078 | 3.078 | â | â | â |
| Hunt & Reffert | 2023 | 313.932 | 56.755 | 3.072 | 5.012 | 3.49 | -10.605 |
| Qin et al. | 2023 | 313.4 | 56.61 | 3.09 | 5.06 | 3.51 | -5.69 |
| He et al. | 2022 | 313.711 | 57.218 | 3.075 | 5.053 | 3.505 | â |
| He et al. | 2022 | 313.82 | 56.96 | 3.0 | 4.77 | 3.48 | -5.9 |
đĄ Note: The UCC values are estimated from its identified members.
| Reference | Year | Dist [kpc] | Av [mag] | DAv [mag] | Age [Myr] | [Fe/H] [dex] | Mass [Msun] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 0.32 | 0.13 | 0.67 | 23 | 0.020 | 162 | â | â |
| Yan et al. | 2026 | â | â | â | 41 | â | â | â | â |
| Yang et al. | 2025 | â | â | â | 22 | -0.080(3) | â | â | â |
| Swiggum et al. | 2024 | 0.32 | â | â | 23 | â | 264 | â | â |
| Hunt & Reffert | 2024 | 0.32 | 0.13 | 0.67 | 23 | â | 59(1) | â | â |
| Cavallo et al. | 2024 | 0.33 | 0.60 | â | 19 | 0.020 | â | â | â |
| Hunt & Reffert | 2023 | 0.32 | 0.13 | 0.67 | 23 | â | â | â | â |
| Qin et al. | 2023 | 0.34 | 0.09 | â | 32 | â | â | â | â |
| He et al. | 2022 | â | 0.45 | â | 35 | â | â | â | â |
| He et al. | 2022 | 0.30 | 0.06 | â | 50 | 0.265 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Yan et al. (2026)
Number of WDs: expected from single-star evolution N=1, with probability of formation through binary evolution >=0.5 N=3.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).