HSC 1668
0.20
UTI
0.28
CN
0.07
Cdens
0.62
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
4.9 [arcmin]
- CN 0.28 Poorly populated
- Cdens 0.07 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1668 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a large 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.
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.
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 | 102.315 | 2.005 | 0.161 | -0.17 | 0.499 | 69.645 |
| Hunt & Reffert | 2024 | 102.313 | 2.002 | 0.159 | -0.186 | 0.52 | 76.689 |
| Cavallo et al. | 2024 | 102.303 | 2.03 | 0.159 | â | â | â |
| Hunt & Reffert | 2023 | 102.313 | 2.002 | 0.159 | -0.186 | 0.52 | 76.689 |
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 | 329* | â | â |
| Cavallo et al. | 2024 | 4.74 | 1.93 | â | 331 | -0.330 | â | â | â |
| Hunt & Reffert | 2023 | 5.61 | 1.62 | 1.71 | 323 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.