CWNU 2138
0.12
UTI
0.0
CN
0.24
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
6.9 [arcmin]
- CN 0.0 Sparse
- Cdens 0.24 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
CWNU 2138 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age cluster (see Parameters). It was recently reported 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.
Relatively close
Moderate extinction
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 154.368 | -55.553 | 0.471 | -8.344 | 3.808 | -4.216 |
| Hunt & Reffert | 2024 | 154.376 | -55.594 | 0.476 | -8.349 | 3.813 | â |
| Hunt & Reffert | 2023 | 154.376 | -55.594 | 0.476 | -8.349 | 3.813 | â |
| He et al. | 2023 | 154.387 | -55.529 | 0.485 | -8.33 | 3.835 | 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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 122* | â | â |
| Hunt & Reffert | 2023 | 2.14 | 1.61 | 0.94 | 124 | â | â | â | â |
| He et al. | 2023 | 1.95 | 1.35 | â | 447 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
