CWNU 2684
0.17
UTI
0.3
CN
0.12
Cdens
0.25
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
30
Core radius and density
1.6 [pc], 0.6 [pc-2]
- CN 0.3 Poorly populated
- Cdens 0.12 Very loose
- CC3 0.25 Low quality
- Clit 0.1 Rarely studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
CWNU 2684 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 64.575 | 44.175 | 0.591 | 1.061 | -2.071 | -22.235 |
| Zhang et al. | 2024 | 64.628 | 44.155 | â | â | â | â |
| Hunt & Reffert | 2024 | 64.628 | 44.155 | 0.589 | 1.092 | -2.086 | -5.296 |
| Cavallo et al. | 2024 | 64.568 | 44.184 | 0.59 | â | â | â |
| Hunt & Reffert | 2023 | 64.628 | 44.155 | 0.589 | 1.092 | -2.086 | -5.296 |
| He et al. | 2023 | 64.593 | 44.212 | 0.589 | 1.084 | -2.097 | 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 | 1.59 | 1.63 | 1.21 | 260 | 0.105 | 143 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.299(1) | â | â | â |
| Hunt & Reffert | 2024 | 1.59 | 1.63 | 1.21 | 181 | â | 143(1) | â | â |
| Cavallo et al. | 2024 | 1.84 | 1.63 | â | 339 | 0.510 | â | â | â |
| Hunt & Reffert | 2023 | 1.59 | 1.63 | 1.21 | 181 | â | â | â | â |
| He et al. | 2023 | 1.55 | 1.85 | â | 447 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).