CWNU 477
0.48
UTI
0.48
CN
1.0
Cdens
0.75
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
48
Core radius and density
0.9 [pc], 5.4 [pc-2]
- CN 0.48 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.75 High 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 477 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age 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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 273.018 | -15.693 | 0.655 | 1.119 | -1.45 | -18.305 |
| Liu et al. | 2025 | 273.01 | -15.69 | 0.65 | 1.08 | -1.53 | -18.3 |
| Hunt & Reffert | 2024 | 273.015 | -15.694 | 0.647 | 1.08 | -1.53 | -18.301 |
| Cavallo et al. | 2024 | 273.031 | -15.701 | 0.647 | â | â | â |
| Hunt & Reffert | 2023 | 273.015 | -15.694 | 0.647 | 1.08 | -1.53 | -18.301 |
| He et al. | 2022 | 273.017 | -15.704 | 0.66 | 1.08 | -1.46 | 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 | 1.45 | 1.4 | 1.42 | 147 | -0.283 | 161 | â | â |
| Liu et al. | 2025 | 2.64 | 0.51 | â | 34 | â | â | â | â |
| Hunt & Reffert | 2024 | 1.45 | 1.40 | 1.42 | 147 | â | 161(1) | â | â |
| Cavallo et al. | 2024 | 1.20 | 1.49 | â | 490 | -0.640 | â | â | â |
| Hunt & Reffert | 2023 | 1.45 | 1.40 | 1.42 | 147 | â | â | â | â |
| He et al. | 2022 | 1.45 | 0.06 | â | 8 | 0.073 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as primordial binary cluster 76 along with NGC_6561, and of multiple system 26 along with NGC_6554 and NGC_6561.
Palma et al. (2025)
Part of multiple system G66, along with NGC_6561 and NGC_6554.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.79 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.79 (50th percentile).