UBC 231
0.55
UTI
0.51
CN
1.0
Cdens
0.5
CC3
0.38
Clit
1.0
Cdup
Radius (P>50% members)
1.6 [arcmin]
- CN 0.51 Moderately populated
- Cdens 1.0 Very dense
- CC3 0.5 Intermediate quality
- Clit 0.38 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 231 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is poorly studied in the literature.
Relatively close
Low extinction
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 115.539 | -26.317 | 0.324 | -2.275 | 2.245 | 70.285 |
| Li et al. | 2025 | 115.551 | -26.305 | 0.31 | -2.263 | 2.214 | â |
| Hunt & Reffert | 2024 | 115.544 | -26.313 | 0.319 | -2.247 | 2.26 | â |
| Cavallo et al. | 2024 | 115.56 | -26.31 | 0.321 | â | â | â |
| Hunt & Reffert | 2023 | 115.544 | -26.313 | 0.319 | -2.247 | 2.26 | â |
| Cantat-Gaudin et al. | 2020 | 115.551 | -26.305 | 0.31 | -2.263 | 2.214 | â |
| Castro-Ginard et al. | 2020 | 115.558 | -26.294 | 0.312 | -2.261 | 2.223 | 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 | 2.81 | 1.05 | â | 142 | 0.050 | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 377* | â | â |
| Cavallo et al. | 2024 | 2.48 | 0.97 | â | 245 | -0.060 | â | â | â |
| Hunt & Reffert | 2023 | 2.72 | 0.94 | 1.21 | 152 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.90 | 0.78 | â | 117 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.