CWNU 2428
0.20
UTI
0.37
CN
0.15
Cdens
0.38
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
37
Core radius and density
2.4 [pc], 0.7 [pc-2]
- CN 0.37 Poorly populated
- Cdens 0.15 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 2428 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young 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 | 246.928 | -51.152 | 0.336 | -2.339 | -3.77 | -29.978 |
| Hunt & Reffert | 2024 | 246.925 | -51.144 | 0.337 | -2.226 | -3.61 | -22.494 |
| Cavallo et al. | 2024 | 246.904 | -51.003 | 0.336 | â | â | â |
| Hunt & Reffert | 2023 | 246.925 | -51.144 | 0.337 | -2.226 | -3.61 | -22.494 |
| He et al. | 2023 | 246.964 | -51.169 | 0.336 | -2.374 | -3.825 | -16.71 |
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 | 2.74 | 3.6 | 2.83 | 85 | 0.360 | 298 | â | â |
| Hunt & Reffert | 2024 | 2.74 | 3.66 | 2.83 | 35 | â | 298(1) | â | â |
| Cavallo et al. | 2024 | 2.90 | 3.55 | â | 135 | 0.360 | â | â | â |
| Hunt & Reffert | 2023 | 2.74 | 3.65 | 2.83 | 35 | â | â | â | â |
| He et al. | 2023 | 2.57 | 3.20 | â | 631 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as optical pair P346, along with CWNU_2266.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.04 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.04 (50th percentile).