OC 0558
0.50
UTI
0.25
CN
1.0
Cdens
0.62
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
1.0 [arcmin]
- CN 0.25 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.62 Intermediate quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
OC 0558 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a large distance, above 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 poorly 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 | 167.86 | -59.539 | 0.192 | -6.99 | 2.334 | 22.31 |
| Hu & Soubiran | 2025 | 167.869 | -59.538 | â | â | â | â |
| Hunt & Reffert | 2024 | 167.866 | -59.538 | 0.191 | -6.988 | 2.324 | 22.869 |
| Cavallo et al. | 2024 | 167.869 | -59.538 | 0.192 | â | â | â |
| Hunt & Reffert | 2023 | 167.866 | -59.538 | 0.191 | -6.988 | 2.324 | 22.869 |
| Hao et al. | 2022 | 167.861 | -59.533 | 0.191 | -7.007 | 2.311 | 20.488 |
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 | -0.200* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 288* | â | â |
| Cavallo et al. | 2024 | 3.98 | 2.07 | â | 575 | -0.090 | â | â | â |
| Hunt & Reffert | 2023 | 4.64 | 2.52 | 1.69 | 167 | â | â | â | â |
| Hao et al. | 2022 | â | 2.33 | â | 631 | 0.611 | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.