OC 0557
0.45
UTI
0.0
CN
1.0
Cdens
0.75
CC3
0.25
Clit
1.0
Cdup
Stellar density (N50/rad)
5.2 [N/pc2]
- CN 0.0 Sparse
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
OC 0557 is a sparse, very dense object of high C3 quality. Its parallax locates it at a relatively close 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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 163.108 | -64.469 | 0.609 | -7.814 | 2.174 | -12.055 |
| Hunt & Reffert | 2024 | 163.072 | -64.473 | 0.613 | -7.825 | 2.176 | -10.196 |
| Cavallo et al. | 2024 | 163.088 | -64.475 | 0.617 | â | â | â |
| Hunt & Reffert | 2023 | 163.072 | -64.473 | 0.613 | -7.825 | 2.176 | -10.196 |
| Hao et al. | 2022 | 163.067 | -64.48 | 0.607 | -7.618 | 2.204 | 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 1.45 | 1.36 | 0.34 | 200 | 0.075 | 110 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 110(1) | â | â |
| Cavallo et al. | 2024 | 1.33 | 1.36 | â | 200 | -0.460 | â | â | â |
| Hunt & Reffert | 2023 | 1.57 | 0.96 | 0.34 | 125 | â | â | â | â |
| Hao et al. | 2022 | â | 1.39 | â | 251 | 0.611 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.