HSC 1666
0.04
UTI
0.0
CN
0.08
Cdens
0.12
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
40.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.08 Very loose
- CC3 0.12 Very low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1666 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by low 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.
Close
Low 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 | 105.184 | 1.672 | 1.607 | -1.74 | -1.124 | 5.518 |
| Zhang et al. | 2024 | 104.752 | 3.317 | â | â | â | â |
| Cavallo et al. | 2024 | 105.349 | 0.656 | 1.596 | â | â | â |
| Hunt & Reffert | 2023 | 104.752 | 3.317 | 1.604 | -1.668 | -1.144 | 7.669 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.121* | â | â | â |
| Cavallo et al. | 2024 | 0.63 | 0.24 | â | 107 | -0.110 | â | â | â |
| Hunt & Reffert | 2023 | 0.60 | 0.09 | 0.45 | 249 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.