CWNU 433
0.18
UTI
0.25
CN
0.04
Cdens
0.5
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
25
Core radius and density
1.2 [pc], 0.2 [pc-2]
- CN 0.25 Poorly populated
- Cdens 0.04 Very loose
- CC3 0.5 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 433 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near 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 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 | 125.84 | -37.001 | 0.645 | -3.429 | 3.362 | -4.269 |
| Hunt & Reffert | 2024 | 125.845 | -37.094 | 0.641 | -3.427 | 3.367 | -2.358 |
| Cavallo et al. | 2024 | 125.73 | -36.914 | 0.641 | â | â | â |
| Hunt & Reffert | 2023 | 125.845 | -37.094 | 0.641 | -3.427 | 3.367 | -2.358 |
| He et al. | 2022 | 125.81 | -37.005 | 0.64 | -3.41 | 3.36 | 29.3 |
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 | 1.49 | 0.415 | 0.28 | 218 | -0.082 | 115 | â | â |
| Hunt & Reffert | 2024 | 1.49 | 0.40 | 0.28 | 113 | â | 115(1) | â | â |
| Cavallo et al. | 2024 | 1.51 | 0.43 | â | 324 | 0.240 | â | â | â |
| Hunt & Reffert | 2023 | 1.49 | 0.40 | 0.28 | 113 | â | â | â | â |
| He et al. | 2022 | 1.23 | 0.51 | â | 794 | -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)
Classified as optical pair (not dynamically associated) P86, along with Collinder_185.
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).