HSC 901
0.27
UTI
0.0
CN
0.09
Cdens
0.75
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
1.8 [arcmin]
- CN 0.0 Sparse
- Cdens 0.09 Very loose
- CC3 0.75 High quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 901 is a sparse, very loose object of high C3 quality. Its parallax locates it at a very large* distance, well above the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, old cluster (see Parameters). It was recently reported in the literature.
(*): The parallax distance estimate (~11.45 kpc) differs significantly from the median photometric distance (~8.19 kpc).
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Very distant
High extinction
Massive
Near-solar metallicity
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 348.536 | 65.676 | 0.087 | -1.188 | -0.215 | -102.021 |
| Hu & Soubiran | 2025 | 348.519 | 65.681 | â | â | â | â |
| Hunt & Reffert | 2024 | 348.54 | 65.664 | 0.084 | -1.218 | -0.193 | -102.01 |
| Cavallo et al. | 2024 | 348.519 | 65.681 | 0.083 | â | â | â |
| Hunt & Reffert | 2023 | 348.54 | 65.664 | 0.084 | -1.218 | -0.193 | -102.01 |
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 | -0.200* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 1541* | â | â |
| Cavallo et al. | 2024 | 7.66 | 3.24 | â | 1950 | -0.230 | â | â | â |
| Hunt & Reffert | 2023 | 8.72 | 4.51 | 1.80 | 509 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.