UBC 523
0.73
UTI
0.55
CN
1.0
Cdens
1.0
CC3
0.55
Clit
1.0
Cdup
Radius (P>50% members)
1.9 [arcmin]
- CN 0.55 Moderately populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.55 Moderately studied
- Cdup 1.0 Unique
Overview
UBC 523 is a moderately populated, 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 near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is moderately studied in the literature.
Distant
Moderate 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 | 191.651 | -66.207 | 0.312 | -5.067 | 0.008 | -5.106 |
| Li et al. | 2025 | 191.63 | -66.205 | 0.311 | -5.078 | 0.033 | â |
| Hu & Soubiran | 2025 | 191.644 | -66.203 | â | â | â | â |
| Almeida et al. | 2025 | 191.664 | -66.2 | â | â | â | â |
| Hunt & Reffert | 2024 | 191.643 | -66.209 | 0.294 | -5.074 | 0.009 | -34.929 |
| Cavallo et al. | 2024 | 191.644 | -66.203 | 0.297 | â | â | â |
| Hunt & Reffert | 2023 | 191.643 | -66.209 | 0.294 | -5.074 | 0.009 | -34.929 |
| Dias et al. | 2021 | 191.664 | -66.2 | 0.292 | -5.051 | 0.03 | â |
| Cantat-Gaudin et al. | 2020 | 191.63 | -66.205 | 0.311 | -5.078 | 0.033 | â |
| Castro-Ginard et al. | 2020 | 191.647 | -66.205 | 0.31 | -5.068 | 0.046 | 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 | 2.82 | 1.84 | â | 397 | -0.042 | â | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.160* | â | â | â |
| Almeida et al. | 2025 | 3.13 | 2.01 | â | 104 | â | 333 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 586* | â | â |
| Cavallo et al. | 2024 | 2.11 | 1.56 | â | 891 | -0.150 | â | â | â |
| Hunt & Reffert | 2023 | 2.94 | 1.84 | 1.83 | 300 | â | â | â | â |
| Dias et al. | 2021 | 3.13 | 2.01 | â | 104 | 0.121 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 3.34 | 1.56 | â | 166 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Almeida et al. (2025)
Mass determination: good fit. Isochrone match: intermediate fit.
Cavallo et al. (2024)
Gold sample.