CWNU 405
0.20
UTI
0.27
CN
0.02
Cdens
0.5
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
27
Core radius and density
2.8 [pc], 0.1 [pc-2]
- CN 0.27 Poorly populated
- Cdens 0.02 Very loose
- CC3 0.5 Intermediate 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 405 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the metallicity parameter (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 | 51.324 | 41.077 | 0.838 | -0.547 | -4.006 | -11.999 |
| Zhang et al. | 2024 | 51.185 | 40.764 | â | â | â | â |
| Hunt & Reffert | 2024 | 51.185 | 40.764 | 0.84 | -0.515 | -3.985 | -20.97 |
| Cavallo et al. | 2024 | 51.475 | 41.329 | 0.84 | â | â | â |
| Hunt & Reffert | 2023 | 51.185 | 40.764 | 0.84 | -0.515 | -3.985 | -20.97 |
| He et al. | 2022 | 51.513 | 41.325 | 0.83 | -0.48 | -4.02 | 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 | 1.135 | 0.625 | 1.33 | 70 | -0.040 | 91 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.283(1) | â | â | â |
| Hunt & Reffert | 2024 | 1.13 | 0.54 | 1.33 | 73 | â | 91(1) | â | â |
| Cavallo et al. | 2024 | 1.14 | 0.70 | â | 66 | -0.040 | â | â | â |
| Hunt & Reffert | 2023 | 1.13 | 0.55 | 1.33 | 73 | â | â | â | â |
| He et al. | 2022 | 1.38 | 0.70 | â | 32 | 0.398 | 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).