CWNU 2051
0.11
UTI
0.0
CN
0.06
Cdens
0.38
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
18
Core radius and density
1.0 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.06 Very loose
- CC3 0.38 Low quality
- Clit 0.06 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 2051 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It was recently reported in the literature.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 276.228 | -14.403 | 0.28 | -0.5 | -2.694 | 31.775 |
| Hunt & Reffert | 2024 | 276.29 | -14.418 | 0.284 | -0.517 | -2.676 | â |
| Cavallo et al. | 2024 | 276.254 | -14.413 | 0.284 | â | â | â |
| Hunt & Reffert | 2023 | 276.29 | -14.418 | 0.284 | -0.517 | -2.676 | â |
| He et al. | 2023 | 276.247 | -14.376 | 0.278 | -0.501 | -2.681 | â |
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 | 3.11 | 4.39 | 2.22 | 137 | 0.310 | 869 | â | â |
| Hunt & Reffert | 2024 | 3.11 | 4.38 | 2.22 | 137 | â | 869(1) | â | â |
| Cavallo et al. | 2024 | 3.52 | 4.51 | â | 56 | 0.310 | â | â | â |
| Hunt & Reffert | 2023 | 3.11 | 4.38 | 2.22 | 137 | â | â | â | â |
| He et al. | 2023 | 2.95 | 4.40 | â | 501 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G134, along with Kronberger_25 and HSC_198.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.22 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.22 (50th percentile).