CWNU 274
0.14
UTI
0.0
CN
0.12
Cdens
0.38
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
1.9 [pc], 0.6 [pc-2]
- CN 0.0 Sparse
- Cdens 0.12 Very loose
- CC3 0.38 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 274 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low 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 is rarely studied 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 | 106.019 | -16.893 | 0.815 | -0.95 | -0.073 | 16.418 |
| Hu & Soubiran | 2025 | 106.054 | -16.895 | â | â | â | â |
| Hunt & Reffert | 2024 | 105.996 | -16.884 | 0.809 | -0.952 | -0.052 | 13.423 |
| Cavallo et al. | 2024 | 106.054 | -16.895 | 0.816 | â | â | â |
| Hunt & Reffert | 2023 | 105.996 | -16.884 | 0.809 | -0.952 | -0.052 | 13.423 |
| He et al. | 2022 | 106.011 | -16.886 | 0.77 | -0.94 | -0.05 | 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 | 1.2 | 0.425 | 0.54 | 403 | -0.020 | 74 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.180(5) | â | â | â |
| Hunt & Reffert | 2024 | 1.19 | 0.39 | 0.54 | 305 | â | 74(1) | â | â |
| Cavallo et al. | 2024 | 1.21 | 0.46 | â | 912 | -0.020 | â | â | â |
| Hunt & Reffert | 2023 | 1.19 | 0.39 | 0.54 | 305 | â | â | â | â |
| He et al. | 2022 | 1.91 | 1.01 | â | 501 | 0.374 | 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: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).