CWNU 2689
0.17
UTI
0.0
CN
0.2
Cdens
0.12
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
7.7 [arcmin]
- CN 0.0 Sparse
- Cdens 0.2 Very loose
- CC3 0.12 Very low quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
CWNU 2689 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate distance, near 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.
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
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 | 77.991 | 37.909 | 0.47 | 1.835 | -3.236 | -35.368 |
| Hunt & Reffert | 2024 | 77.978 | 37.922 | 0.464 | 1.817 | -3.19 | -35.339 |
| Cavallo et al. | 2024 | 77.985 | 37.902 | 0.464 | â | â | â |
| Hunt & Reffert | 2023 | 77.978 | 37.922 | 0.464 | 1.817 | -3.19 | -35.339 |
| He et al. | 2023 | 77.976 | 37.922 | 0.464 | 1.831 | -3.236 | 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 | 177* | â | â |
| Cavallo et al. | 2024 | 2.07 | 2.05 | â | 60 | 0.000 | â | â | â |
| Hunt & Reffert | 2023 | 2.00 | 1.85 | 1.28 | 170 | â | â | â | â |
| He et al. | 2023 | 1.95 | 2.10 | â | 355 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.