UBC 558
0.71
UTI
0.79
CN
1.0
Cdens
1.0
CC3
0.38
Clit
1.0
Cdup
Radius (P>50% members)
3.3 [arcmin]
- CN 0.79 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.38 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 558 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 high extinction. It is catalogued as a massive, near-solar metallicity, young cluster (see Parameters). It is poorly studied in the literature.
Relatively close
High extinction
Massive
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 259.355 | -40.275 | 0.343 | -0.727 | -1.963 | -23.841 |
| Hunt & Reffert | 2024 | 259.372 | -40.277 | 0.346 | -0.685 | -1.962 | 3.868 |
| Celli et al. | 2024 | 259.353 | -40.276 | â | â | â | â |
| Cavallo et al. | 2024 | 259.354 | -40.257 | 0.345 | â | â | â |
| Hunt & Reffert | 2023 | 259.372 | -40.277 | 0.346 | -0.685 | -1.962 | 3.868 |
| Cantat-Gaudin et al. | 2020 | 259.353 | -40.276 | 0.342 | -0.734 | -1.952 | â |
| Castro-Ginard et al. | 2020 | 259.342 | -40.274 | 0.341 | -0.732 | -1.958 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 3788* | â | â |
| Celli et al. | 2024 | â | â | â | 7 | â | 2244 | â | â |
| Cavallo et al. | 2024 | 2.27 | 4.23 | â | 35 | -0.100 | â | â | â |
| Hunt & Reffert | 2023 | 2.59 | 3.92 | 2.65 | 33 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.83 | 3.23 | â | 7 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.