HSC 1585
0.24
UTI
0.0
CN
0.06
Cdens
0.62
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
10.3 [arcmin]
- CN 0.0 Sparse
- Cdens 0.06 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 1585 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age 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
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 93.154 | 9.837 | 0.369 | -0.386 | -1.122 | â |
| Hu & Soubiran | 2025 | 93.334 | 9.899 | â | â | â | â |
| Zhang et al. | 2024 | 93.137 | 9.803 | â | â | â | â |
| Cavallo et al. | 2024 | 93.334 | 9.899 | 0.373 | â | â | â |
| Hunt & Reffert | 2023 | 93.137 | 9.803 | 0.373 | -0.374 | -1.136 | 21.428 |
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 | -0.190* | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.253* | â | â | â |
| Cavallo et al. | 2024 | 2.52 | 0.45 | â | 631 | 0.440 | â | â | â |
| Hunt & Reffert | 2023 | 2.39 | 0.45 | 1.37 | 530 | 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.