CWNU 1228
0.59
UTI
0.79
CN
1.0
Cdens
0.75
CC3
0.3
Clit
0.94
Cdup
Stellar density (N50/rad)
14.3 [N/pc2]
- CN 0.79 Rich
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.3 Poorly studied
- Cdup 0.94 Very likely 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 1228 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is poorly studied in the literature.
Note: This is very likely a unique object, which shares a very small percentage of members with at least one previously reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 336.227 | 63.672 | 1.081 | -0.589 | -3.002 | -20.577 |
| Liu et al. | 2025 | 336.72 | 63.72 | 1.08 | -0.47 | -3.03 | -38.19 |
| Hunt & Reffert | 2024 | 336.715 | 63.717 | 1.081 | -0.468 | -3.026 | -38.195 |
| Cavallo et al. | 2024 | 336.607 | 63.716 | 1.087 | â | â | â |
| Hunt & Reffert | 2023 | 336.715 | 63.717 | 1.081 | -0.468 | -3.026 | -38.195 |
| He et al. | 2022 | 336.209 | 63.623 | 1.093 | -0.72 | -2.98 | 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 | 0.92 | 3.095 | 1.41 | 6 | 0.280 | 168 | â | â |
| Liu et al. | 2025 | 2.68 | 1.17 | â | 13 | â | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 168(1) | â | â |
| Cavallo et al. | 2024 | 0.92 | 2.69 | â | 8 | 0.280 | â | â | â |
| Hunt & Reffert | 2023 | 0.90 | 3.50 | 1.41 | 4 | â | â | â | â |
| He et al. | 2022 | â | 3.95 | â | 4 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 101 along with Pismis-Moreno_1, and as primordial binary cluster 177 along with HSC_853, and of multiple system 34 along with Pismis-Moreno_1, CWNU_1126, HSC_853, OC_0185 and HSC_824.
Palma et al. (2025)
Part of multiple system G30, along with Pismis-Moreno_1, OC_0185, CWNU_1126, HSC_824, FSR_0398 and CWNU_446.
Cavallo et al. (2024)
Bronze sample.