CWNU 180
0.16
UTI
0.0
CN
0.04
Cdens
0.38
CC3
0.19
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
3.4 [pc], 0.2 [pc-2]
- CN 0.0 Sparse
- Cdens 0.04 Very loose
- CC3 0.38 Low quality
- Clit 0.19 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 180 is a sparse, very loose object of 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, young cluster, but with a large variance across recent sources for the absorption, age, and metallicity parameters (see Parameters). It is rarely studied 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 | 307.7 | 38.101 | 0.964 | -1.572 | -3.899 | 4.463 |
| Hunt & Reffert | 2024 | 307.555 | 38.173 | 0.932 | -1.599 | -3.908 | -5.817 |
| Cavallo et al. | 2024 | 307.686 | 38.104 | 0.943 | â | â | â |
| Hunt & Reffert | 2023 | 307.555 | 38.173 | 0.932 | -1.599 | -3.908 | -5.817 |
| He et al. | 2022 | 307.78 | 38.367 | 0.971 | -1.572 | -3.885 | â |
| He et al. | 2022 | 307.901 | 37.839 | 0.96 | -1.6 | -3.98 | 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 | 1.05 | 1.64 | 2.31 | 24 | -0.435 | 109 | â | â |
| Hunt & Reffert | 2024 | 1.00 | 1.64 | 2.31 | 24 | â | 109(1) | â | â |
| Cavallo et al. | 2024 | 1.11 | 2.06 | â | 28 | 0.010 | â | â | â |
| Hunt & Reffert | 2023 | 1.00 | 1.64 | 2.31 | 24 | â | â | â | â |
| He et al. | 2022 | â | 1.95 | â | 32 | â | â | â | â |
| He et al. | 2022 | 1.10 | 0.25 | â | 2 | -0.881 | 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: 0.82 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.82 (50th percentile).