HSC 2355
0.20
UTI
0.0
CN
0.35
Cdens
0.62
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
8.7 [arcmin]
- CN 0.0 Sparse
- Cdens 0.35 Loose
- CC3 0.62 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 2355 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity parameter (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
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 151.646 | -64.823 | 0.684 | -7.66 | 5.126 | -11.792 |
| Hu & Soubiran | 2025 | 151.774 | -64.858 | â | â | â | â |
| Cavallo et al. | 2024 | 151.774 | -64.858 | 0.683 | â | â | â |
| Hunt & Reffert | 2023 | 151.58 | -64.84 | 0.681 | -7.63 | 5.053 | -17.063 |
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 | -0.240* | â | â | â |
| Cavallo et al. | 2024 | 1.19 | 0.30 | â | 2138 | 0.250 | â | â | â |
| Hunt & Reffert | 2023 | 1.40 | 0.31 | 0.64 | 762 | 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.