UBC 310
0.73
UTI
0.8
CN
1.0
Cdens
1.0
CC3
0.44
Clit
1.0
Cdup
Radius (P>50% members)
4.2 [arcmin]
- CN 0.8 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.44 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 310 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is poorly studied in the literature.
Note: This object shares a moderate percentage of members with 2 later reported entries. See table with shared members information.
Relatively close
Moderate extinction
Massive
Near-solar metallicity
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 244.475 | -53.526 | 0.33 | -0.724 | -2.19 | -27.962 |
| Li et al. | 2025 | 244.473 | -53.527 | 0.302 | -0.684 | -2.192 | â |
| Hu & Soubiran | 2025 | 244.476 | -53.522 | â | â | â | â |
| Hunt & Reffert | 2024 | 244.476 | -53.524 | 0.338 | -0.734 | -2.187 | -23.597 |
| Cavallo et al. | 2024 | 244.476 | -53.522 | 0.337 | â | â | â |
| Hunt & Reffert | 2023 | 244.476 | -53.524 | 0.338 | -0.734 | -2.187 | -23.597 |
| Cantat-Gaudin et al. | 2020 | 244.473 | -53.527 | 0.302 | -0.684 | -2.192 | â |
| Castro-Ginard et al. | 2020 | 244.466 | -53.537 | 0.298 | -0.688 | -2.189 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Li et al. | 2025 | 2.78 | 1.18 | â | 1197 | 0.150 | â | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.200* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 1890* | â | â |
| Cavallo et al. | 2024 | 2.19 | 1.55 | â | 1318 | -0.150 | â | â | â |
| Hunt & Reffert | 2023 | 3.01 | 1.20 | 0.25 | 1334 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.72 | 1.02 | â | 1202 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.