CWNU 181
0.16
UTI
0.0
CN
0.06
Cdens
0.62
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
21
Core radius and density
2.5 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.06 Very loose
- CC3 0.62 Intermediate 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 181 is a sparse, very loose object of intermediate 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 (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 | 289.36 | 5.884 | 0.872 | -0.554 | -4.652 | 21.882 |
| Hunt & Reffert | 2024 | 289.158 | 5.816 | 0.885 | -0.501 | -4.644 | 18.425 |
| Cavallo et al. | 2024 | 289.197 | 5.801 | 0.879 | â | â | â |
| Hunt & Reffert | 2023 | 289.158 | 5.816 | 0.885 | -0.501 | -4.644 | 18.425 |
| He et al. | 2022 | 289.368 | 5.919 | 0.84 | -0.55 | -4.64 | 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 | 1.13 | 1.56 | 0.74 | 135 | -0.068 | 66 | â | â |
| Hunt & Reffert | 2024 | 1.13 | 1.56 | 0.74 | 135 | â | 66(1) | â | â |
| Cavallo et al. | 2024 | 1.14 | 1.42 | â | 186 | -0.100 | â | â | â |
| Hunt & Reffert | 2023 | 1.13 | 1.56 | 0.74 | 135 | â | â | â | â |
| He et al. | 2022 | 1.10 | 1.84 | â | 100 | -0.036 | 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: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).