CWNU 455
0.27
UTI
0.31
CN
0.18
Cdens
0.75
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
31
Core radius and density
1.9 [pc], 0.9 [pc-2]
- CN 0.31 Poorly populated
- Cdens 0.18 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 455 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 304.831 | 41.378 | 0.775 | -2.424 | -3.03 | -14.04 |
| Hunt & Reffert | 2024 | 304.843 | 41.4 | 0.776 | -2.444 | -3.102 | -32.188 |
| Cavallo et al. | 2024 | 304.815 | 41.256 | 0.776 | â | â | â |
| Hunt & Reffert | 2023 | 304.843 | 41.4 | 0.776 | -2.444 | -3.102 | -32.188 |
| He et al. | 2022 | 304.827 | 41.38 | 0.78 | -2.38 | -3.02 | 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 | 1.25 | 3.35 | 2.42 | 19 | 0.058 | 152 | â | â |
| Hunt & Reffert | 2024 | 1.25 | 3.35 | 2.42 | 18 | â | 152(1) | â | â |
| Cavallo et al. | 2024 | 1.73 | 3.31 | â | 20 | 0.520 | â | â | â |
| Hunt & Reffert | 2023 | 1.25 | 3.35 | 2.42 | 18 | â | â | â | â |
| He et al. | 2022 | 1.02 | 3.93 | â | 20 | -0.404 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G186, along with QC_1, HSC_622 and HSC_620.
Cavallo et al. (2024)
Bronze sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.18 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.18 (50th percentile).