UBC 1591
0.58
UTI
0.3
CN
1.0
Cdens
1.0
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
2.9 [arcmin]
- CN 0.3 Poorly populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 1591 is a poorly 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 metallicity parameter (see Parameters). It is poorly studied in the literature.
Relatively close
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 | 204.024 | -64.654 | 0.399 | -5.415 | -2.07 | â |
| Hu & Soubiran | 2025 | 204.057 | -64.641 | â | â | â | â |
| Hunt & Reffert | 2024 | 204.054 | -64.646 | 0.405 | -5.412 | -2.046 | -39.231 |
| Cavallo et al. | 2024 | 204.057 | -64.641 | 0.403 | â | â | â |
| Hunt & Reffert | 2023 | 204.054 | -64.646 | 0.405 | -5.412 | -2.046 | -39.231 |
| Castro-Ginard et al. | 2022 | 204.01 | -64.67 | 0.4 | -5.41 | -2.08 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | -0.270* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 405* | â | â |
| Cavallo et al. | 2024 | 2.06 | 1.70 | â | 661 | 0.140 | â | â | â |
| Hunt & Reffert | 2023 | 2.26 | 1.68 | 1.37 | 385 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 2.71 | 1.22 | â | 170 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.