UBC 503
0.70
UTI
0.55
CN
1.0
Cdens
0.75
CC3
0.6
Clit
1.0
Cdup
Radius (P>50% members)
5.4 [arcmin]
- CN 0.55 Moderately populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.6 Moderately studied
- Cdup 1.0 Unique
Overview
UBC 503 is a moderately populated, very dense object of high 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, old cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is moderately studied in the literature.
Relatively close
Low extinction
Near-solar metallicity
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 156.269 | -62.335 | 0.47 | -7.443 | 5.232 | 6.199 |
| Li et al. | 2025 | 156.274 | -62.321 | 0.464 | -7.424 | 5.209 | â |
| Hu & Soubiran | 2025 | 156.3 | -62.324 | â | â | â | â |
| Almeida et al. | 2025 | 156.283 | -62.335 | â | â | â | â |
| Hunt & Reffert | 2024 | 156.264 | -62.324 | 0.476 | -7.438 | 5.248 | 1.015 |
| Cavallo et al. | 2024 | 156.3 | -62.324 | 0.476 | â | â | â |
| Hunt & Reffert | 2023 | 156.264 | -62.324 | 0.476 | -7.438 | 5.248 | 1.015 |
| Almeida et al. | 2023 | 156.284 | -62.337 | â | â | â | â |
| Dias et al. | 2021 | 156.283 | -62.335 | 0.451 | -7.427 | 5.226 | 7.373 |
| Cantat-Gaudin et al. | 2020 | 156.274 | -62.321 | 0.464 | -7.424 | 5.209 | â |
| Castro-Ginard et al. | 2020 | 156.277 | -62.324 | 0.462 | -7.418 | 5.225 | 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 | 1.84 | 0.75 | â | 1521 | -0.239 | â | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.290* | â | â | â |
| Almeida et al. | 2025 | 2.12 | 1.02 | â | 1009 | â | 119 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 275* | â | â |
| Cavallo et al. | 2024 | 1.74 | 0.76 | â | 1738 | -0.140 | â | â | â |
| Hunt & Reffert | 2023 | 1.96 | 0.26 | 0.60 | 1549 | â | â | â | â |
| Almeida et al. | 2023 | 1.95 | 0.80 | â | 1259 | -0.028 | 121* | 0.42 | â |
| Dias et al. | 2021 | 2.12 | 1.02 | â | 1009 | -0.079 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.11 | 0.54 | â | 1549 | 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.