OC 0181
0.23
UTI
0.0
CN
0.19
Cdens
0.62
CC3
0.25
Clit
0.88
Cdup
Radius (P>50% members)
16.3 [arcmin]
- CN 0.0 Sparse
- Cdens 0.19 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.25 Poorly studied
- Cdup 0.88 Very likely unique
Overview
OC 0181 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.
Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=0.88) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Relatively close
Moderate extinction
Near-solar metallicity
Very young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 334.018 | 61.118 | 1.131 | -1.005 | -3.011 | -15.424 |
| Hunt & Reffert | 2024 | 334.027 | 60.912 | 1.139 | -1.227 | -3.018 | -8.424 |
| Cavallo et al. | 2024 | 333.989 | 60.883 | 1.142 | â | â | â |
| Hunt & Reffert | 2023 | 334.027 | 60.912 | 1.139 | -1.227 | -3.018 | -8.424 |
| Hao et al. | 2022 | 334.125 | 60.856 | 1.127 | -0.654 | -2.911 | 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 | 120* | â | â |
| Cavallo et al. | 2024 | 1.22 | 2.25 | â | 138 | 0.410 | â | â | â |
| Hunt & Reffert | 2023 | 0.86 | 2.80 | 0.93 | 3 | â | â | â | â |
| Hao et al. | 2022 | â | 0.67 | â | 2 | 0.223 | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Wood sample.