CWNU 1440
0.55
UTI
0.38
CN
1.0
Cdens
0.75
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
3.9 [arcmin]
- CN 0.38 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
CWNU 1440 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate 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 was recently reported in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 181.693 | -62.974 | 0.461 | -7.49 | 0.163 | â |
| Hu & Soubiran | 2025 | 181.671 | -62.973 | â | â | â | â |
| Hunt & Reffert | 2024 | 181.691 | -62.989 | 0.451 | -7.485 | 0.163 | â |
| Cavallo et al. | 2024 | 181.671 | -62.973 | 0.455 | â | â | â |
| Hunt & Reffert | 2023 | 181.691 | -62.989 | 0.451 | -7.485 | 0.163 | â |
| He et al. | 2023 | 181.677 | -62.974 | 0.46 | -7.48 | 0.169 | 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 | 2.0 | 0.93 | 0.39 | 151 | 0.185 | 210 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.110(5) | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 210(1) | â | â |
| Cavallo et al. | 2024 | 1.92 | 0.49 | â | 646 | 0.480 | â | â | â |
| Hunt & Reffert | 2023 | 2.00 | 0.93 | 0.39 | 151 | â | â | â | â |
| He et al. | 2023 | 2.04 | 1.35 | â | 112 | â | â | â | â |
(N): Indicates that are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.