HSC 186
0.21
UTI
0.42
CN
0.23
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
6.6 [arcmin]
- CN 0.42 Poorly populated
- Cdens 0.23 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 186 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, metal-poor, intermediate-age cluster (see Parameters). It was recently reported in the literature.
Note: This object shares a small percentage of members with a later reported entry. See table with shared members information.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Relatively close
High extinction
Massive
Metal-poor
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 275.434 | -15.797 | 0.319 | -0.467 | -2.276 | 28.355 |
| Hunt & Reffert | 2024 | 275.425 | -15.793 | 0.313 | -0.449 | -2.296 | 16.783 |
| Cavallo et al. | 2024 | 275.426 | -15.793 | 0.321 | â | â | â |
| Hunt & Reffert | 2023 | 275.425 | -15.793 | 0.313 | -0.449 | -2.296 | 16.783 |
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 | 3927* | â | â |
| Cavallo et al. | 2024 | 2.88 | 4.19 | â | 174 | -0.500 | â | â | â |
| Hunt & Reffert | 2023 | 2.84 | 4.26 | 3.17 | 88 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Wood sample.