CWNU 2431
0.19
UTI
0.0
CN
0.07
Cdens
0.75
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
20
Core radius and density
1.6 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.07 Very loose
- CC3 0.75 High 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 2431 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, very 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 | 219.34 | -60.97 | 0.417 | -4.64 | -3.219 | -38.926 |
| Hunt & Reffert | 2024 | 219.377 | -60.959 | 0.415 | -4.623 | -3.214 | -38.881 |
| Cavallo et al. | 2024 | 219.356 | -60.962 | 0.413 | â | â | â |
| Hunt & Reffert | 2023 | 219.377 | -60.959 | 0.415 | -4.623 | -3.214 | -38.881 |
| He et al. | 2023 | 219.244 | -60.982 | 0.422 | -4.631 | -3.217 | 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 | 2.215 | 1.47 | 1.89 | 14 | 0.960 | 253 | â | â |
| Hunt & Reffert | 2024 | 2.19 | 1.47 | 1.89 | 14 | â | 253(1) | â | â |
| Cavallo et al. | 2024 | 2.26 | 1.00 | â | 85 | 0.960 | â | â | â |
| Hunt & Reffert | 2023 | 2.19 | 1.47 | 1.89 | 14 | â | â | â | â |
| He et al. | 2023 | 2.24 | 1.70 | â | 11 | 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 P351, along with Hogg_17.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.89 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.89 (50th percentile).