CWNU 52
0.19
UTI
0.0
CN
0.13
Cdens
0.5
CC3
0.16
Clit
1.0
Cdup
Stellar density (N50/rad)
0.7 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.13 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.16 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 52 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young 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 | 72.238 | 26.389 | 1.625 | -1.812 | -2.303 | -5.324 |
| Yang et al. | 2025 | 72.339 | 26.185 | â | â | â | â |
| Zhang et al. | 2024 | 72.339 | 26.185 | â | â | â | â |
| Swiggum et al. | 2024 | 72.339 | 26.185 | 1.616 | -1.728 | -2.281 | -7.339 |
| Hunt & Reffert | 2024 | 72.339 | 26.185 | 1.616 | -1.728 | -2.281 | -7.845 |
| Cavallo et al. | 2024 | 72.37 | 26.201 | 1.616 | â | â | â |
| Hunt & Reffert | 2023 | 72.339 | 26.185 | 1.616 | -1.728 | -2.281 | -7.845 |
| He et al. | 2022 | 72.206 | 26.227 | 1.62 | -1.81 | -2.34 | 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 | 0.595 | 2.25 | 2.46 | 55 | -0.141 | 183 | â | â |
| Yang et al. | 2025 | â | â | â | 55 | -0.120(3) | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.162(1) | â | â | â |
| Swiggum et al. | 2024 | 0.60 | â | â | 56 | â | 269 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 97(1) | â | â |
| Cavallo et al. | 2024 | 0.65 | 2.25 | â | 55 | 0.400 | â | â | â |
| Hunt & Reffert | 2023 | 0.58 | 1.99 | 2.46 | 55 | â | â | â | â |
| He et al. | 2022 | 0.59 | 3.11 | â | 50 | -0.404 | 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: 0.90 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.90 (50th percentile).