CWNU 2165
0.18
UTI
0.0
CN
0.19
Cdens
0.5
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
22
Core radius and density
1.8 [pc], 0.9 [pc-2]
- CN 0.0 Sparse
- Cdens 0.19 Very loose
- CC3 0.5 Intermediate 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 2165 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low 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 | 126.744 | -48.707 | 0.561 | -4.155 | 7.376 | 9.212 |
| Hu & Soubiran | 2025 | 126.739 | -48.781 | â | â | â | â |
| Hunt & Reffert | 2024 | 126.81 | -48.705 | 0.548 | -4.156 | 7.353 | 21.624 |
| Cavallo et al. | 2024 | 126.739 | -48.781 | 0.558 | â | â | â |
| Hunt & Reffert | 2023 | 126.81 | -48.705 | 0.548 | -4.156 | 7.353 | 21.624 |
| He et al. | 2023 | 126.727 | -48.708 | 0.543 | -4.155 | 7.378 | 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 | 1.72 | 0.81 | 0.31 | 258 | 0.170 | 91 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.250(5) | â | â | â |
| Hunt & Reffert | 2024 | 1.68 | 0.81 | 0.31 | 162 | â | 91(1) | â | â |
| Cavallo et al. | 2024 | 1.76 | 0.63 | â | 550 | 0.590 | â | â | â |
| Hunt & Reffert | 2023 | 1.68 | 0.81 | 0.31 | 162 | â | â | â | â |
| He et al. | 2023 | 1.78 | 0.95 | â | 355 | 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: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).