HSC 1985
0.09
UTI
0.0
CN
0.18
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
12.0 [arcmin]
- CN 0.0 Sparse
- Cdens 0.18 Very loose
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1985 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old 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
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 118.831 | -30.297 | 0.745 | -3.889 | 2.796 | 26.07 |
| Hu & Soubiran | 2025 | 118.912 | -30.327 | â | â | â | â |
| Cavallo et al. | 2024 | 118.912 | -30.327 | 0.743 | â | â | â |
| Hunt & Reffert | 2023 | 118.824 | -30.295 | 0.737 | -3.892 | 2.762 | 27.888 |
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 | -0.320* | â | â | â |
| Cavallo et al. | 2024 | 1.28 | 0.75 | â | 2042 | -0.510 | â | â | â |
| Hunt & Reffert | 2023 | 1.27 | 0.23 | 0.45 | 2371 | 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.