CWNU 1897
0.40
UTI
0.3
CN
0.72
Cdens
0.38
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
3.7 [arcmin]
- CN 0.3 Poorly populated
- Cdens 0.72 Moderately dense
- CC3 0.38 Low quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
CWNU 1897 is a poorly populated, moderately dense object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.
Relatively close
Low extinction
Near-solar metallicity
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 123.313 | -27.612 | 0.372 | -3.737 | 2.529 | 51.632 |
| Hu & Soubiran | 2025 | 123.308 | -27.615 | â | â | â | â |
| Hunt & Reffert | 2024 | 123.305 | -27.606 | 0.341 | -3.747 | 2.559 | 49.442 |
| Cavallo et al. | 2024 | 123.308 | -27.615 | 0.337 | â | â | â |
| Hunt & Reffert | 2023 | 123.305 | -27.606 | 0.341 | -3.747 | 2.559 | 49.442 |
| He et al. | 2023 | 123.338 | -27.645 | 0.388 | -3.736 | 2.518 | 41.49 |
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 | -0.200* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 236* | â | â |
| Cavallo et al. | 2024 | 2.23 | 0.77 | â | 1413 | -0.710 | â | â | â |
| Hunt & Reffert | 2023 | 2.62 | 0.14 | 1.04 | 1578 | â | â | â | â |
| He et al. | 2023 | 2.75 | 0.40 | â | 708 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.