HSC 1618
0.18
UTI
0.0
CN
0.13
Cdens
0.25
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
12.7 [arcmin]
- CN 0.0 Sparse
- Cdens 0.13 Very loose
- CC3 0.25 Low quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 1618 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively 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.
Relatively 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 | 103.132 | 8.344 | 0.614 | -3.018 | 1.184 | â |
| Hu & Soubiran | 2025 | 103.135 | 8.309 | â | â | â | â |
| Hunt & Reffert | 2024 | 103.139 | 8.333 | 0.616 | -2.996 | 1.181 | â |
| Cavallo et al. | 2024 | 103.135 | 8.309 | 0.616 | â | â | â |
| Hunt & Reffert | 2023 | 103.139 | 8.333 | 0.616 | -2.996 | 1.181 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | -0.170* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 101* | â | â |
| Cavallo et al. | 2024 | 1.52 | 0.69 | â | 692 | -0.460 | â | â | â |
| Hunt & Reffert | 2023 | 1.53 | 0.40 | 0.54 | 710 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.