UBC 322
0.73
UTI
0.77
CN
1.0
Cdens
1.0
CC3
0.44
Clit
1.0
Cdup
Radius (P>50% members)
5.1 [arcmin]
- CN 0.77 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.44 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 322 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Relatively close
High extinction
Massive
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 255.2 | -44.18 | 0.345 | -0.713 | -1.775 | -36.239 |
| Almeida et al. | 2025 | 255.2 | -44.199 | â | â | â | â |
| Hunt & Reffert | 2024 | 255.216 | -44.19 | 0.34 | -0.718 | -1.782 | -38.868 |
| Cavallo et al. | 2024 | 255.204 | -44.173 | 0.343 | â | â | â |
| Hunt & Reffert | 2023 | 255.216 | -44.19 | 0.34 | -0.718 | -1.782 | -38.868 |
| Dias et al. | 2021 | 255.2 | -44.199 | 0.349 | -0.7 | -1.729 | -35.597 |
| Cantat-Gaudin et al. | 2020 | 255.213 | -44.184 | 0.345 | -0.707 | -1.731 | â |
| Castro-Ginard et al. | 2020 | 255.215 | -44.186 | 0.346 | -0.705 | -1.729 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Almeida et al. | 2025 | 2.88 | 3.21 | â | 6 | â | 1274 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 2305* | â | â |
| Cavallo et al. | 2024 | 2.07 | 3.97 | â | 162 | -0.350 | â | â | â |
| Hunt & Reffert | 2023 | 2.60 | 3.61 | 2.40 | 62 | â | â | â | â |
| Dias et al. | 2021 | 2.88 | 3.21 | â | 6 | 0.347 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.78 | 3.13 | â | 200 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.
Cavallo et al. (2024)
Gold sample.