OC 0431
0.00
UTI
0.0
CN
0.17
Cdens
0.75
CC3
0.25
Clit
0.0
Cdup
Radius (P>50% members)
1.7 [arcmin]
- CN 0.0 Sparse
- Cdens 0.17 Very loose
- CC3 0.75 High quality
- Clit 0.25 Poorly studied
- Cdup 0.0 Very likely duplicate
Overview
OC 0431 is a sparse, very loose object of high C3 quality. Its parallax locates it at a large 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 age parameter (see Parameters). It is poorly studied in the literature.
â ī¸ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.
Very 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 | 117.961 | -30.618 | 0.102 | -1.398 | 1.863 | 94.718 |
| Hu & Soubiran | 2025 | 117.955 | -30.626 | â | â | â | â |
| Cavallo et al. | 2024 | 117.955 | -30.626 | 0.104 | â | â | â |
| Hunt & Reffert | 2023 | 117.931 | -30.639 | 0.11 | -1.404 | 1.852 | 114.099 |
| Hao et al. | 2022 | 117.982 | -30.61 | 0.102 | -1.413 | 1.826 | 78.78 |
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 |
| Cavallo et al. | 2024 | 7.76 | 2.31 | â | 1230 | -0.290 | â | â | â |
| Hunt & Reffert | 2023 | 7.78 | 3.14 | 2.39 | 277 | â | â | â | â |
| Hao et al. | 2022 | â | 1.30 | â | 794 | 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.