HSC 1585
0.26
UTI
0.0
CN
0.06
Cdens
0.62
CC3
0.3
Clit
1.0
Cdup
Stellar density (N50/rad)
0.3 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.06 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.3 Poorly studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 2.52 | 0.45 | 1.37 | 530 | -0.190 | â | â | â |
| Liu et al. | 2025 | 3.52 | 0.28 | â | 427 | â | â | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.190(5) | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.253(1) | 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 |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 201 along with UBC_1320.
Palma et al. (2025)
Classified as optical pair P436, along with UBC_1320.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.