HSC 1866
0.20
UTI
0.0
CN
0.52
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
2.8 [arcmin]
- CN 0.0 Sparse
- Cdens 0.52 Moderately dense
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1866 is a sparse, moderately dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.
Note: This object shares a significant 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.
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 | 114.802 | -18.942 | 0.268 | -1.734 | 2.31 | 67.756 |
| Hunt & Reffert | 2024 | 114.797 | -18.945 | 0.252 | -1.714 | 2.302 | â |
| Cavallo et al. | 2024 | 114.803 | -19.001 | 0.254 | â | â | â |
| Hunt & Reffert | 2023 | 114.797 | -18.945 | 0.252 | -1.714 | 2.302 | 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 | 255* | â | â |
| Cavallo et al. | 2024 | 3.12 | 1.13 | â | 257 | -0.030 | â | â | â |
| Hunt & Reffert | 2023 | 3.40 | 1.44 | 0.87 | 96 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.