HSC 1234
0.14
UTI
0.0
CN
0.06
Cdens
0.12
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
76.0 [arcmin]
- CN 0.0 Sparse
- Cdens 0.06 Very loose
- CC3 0.12 Very low quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 1234 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a very close distance, near 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.
Very 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 | 58.665 | 41.404 | 2.502 | -0.171 | -10.242 | 4.163 |
| Hu & Soubiran | 2025 | 58.586 | 41.065 | â | â | â | â |
| Zhang et al. | 2024 | 58.5 | 40.44 | â | â | â | â |
| Cavallo et al. | 2024 | 58.586 | 41.065 | 2.519 | â | â | â |
| Hunt & Reffert | 2023 | 58.5 | 40.44 | 2.525 | -0.149 | -10.328 | 2.759 |
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 | -0.250* | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.031* | â | â | â |
| Cavallo et al. | 2024 | 0.41 | 0.72 | â | 955 | 0.210 | â | â | â |
| Hunt & Reffert | 2023 | 0.37 | 0.41 | 0.25 | 6067 | 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.