CWNU 2255
0.30
UTI
0.0
CN
0.13
Cdens
0.75
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
4.9 [arcmin]
- CN 0.0 Sparse
- Cdens 0.13 Very loose
- CC3 0.75 High quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
CWNU 2255 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate distance, well above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.
Distant
Moderate extinction
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 76.43 | 55.764 | 0.275 | -0.803 | -1.179 | -30.231 |
| Hu & Soubiran | 2025 | 76.439 | 55.754 | â | â | â | â |
| Hunt & Reffert | 2024 | 76.427 | 55.766 | 0.277 | -0.785 | -1.194 | -30.385 |
| Cavallo et al. | 2024 | 76.439 | 55.754 | 0.277 | â | â | â |
| Hunt & Reffert | 2023 | 76.427 | 55.766 | 0.277 | -0.785 | -1.194 | -30.385 |
| He et al. | 2023 | 76.419 | 55.757 | 0.275 | -0.788 | -1.179 | -30.16 |
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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | 0.050* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 226* | â | â |
| Cavallo et al. | 2024 | 3.50 | 2.10 | â | 603 | 0.130 | â | â | â |
| Hunt & Reffert | 2023 | 3.26 | 2.05 | 1.29 | 647 | â | â | â | â |
| He et al. | 2023 | 3.16 | 1.90 | â | 891 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.