CWNU 2357
0.12
UTI
0.25
CN
0.03
Cdens
0.12
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
25
Core radius and density
4.9 [pc], 0.1 [pc-2]
- CN 0.25 Poorly populated
- Cdens 0.03 Very loose
- CC3 0.12 Very low quality
- Clit 0.1 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 2357 is a poorly populated, very loose object of very low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (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 | 121.333 | -35.877 | 0.604 | -4.375 | 4.046 | 25.643 |
| Hu & Soubiran | 2025 | 121.351 | -35.974 | â | â | â | â |
| Hunt & Reffert | 2024 | 121.367 | -36.016 | 0.596 | -4.376 | 4.04 | -6.702 |
| Cavallo et al. | 2024 | 121.351 | -35.974 | 0.596 | â | â | â |
| Hunt & Reffert | 2023 | 121.367 | -36.016 | 0.596 | -4.376 | 4.04 | -6.702 |
| He et al. | 2023 | 121.259 | -35.873 | 0.602 | -4.371 | 4.06 | 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 | 1.635 | 1.605 | 1.5 | 176 | 0.015 | 141 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.200(5) | â | â | â |
| Hunt & Reffert | 2024 | 1.64 | 1.56 | 1.50 | 101 | â | 141(1) | â | â |
| Cavallo et al. | 2024 | 1.63 | 1.65 | â | 525 | 0.230 | â | â | â |
| Hunt & Reffert | 2023 | 1.64 | 1.56 | 1.50 | 101 | â | â | â | â |
| He et al. | 2023 | 1.58 | 2.10 | â | 251 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.52 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.52 (50th percentile).