HSC 1566
0.21
UTI
0.25
CN
0.17
Cdens
0.12
CC3
0.25
Clit
1.0
Cdup
Stellar density (N50/rad)
0.9 [N/pc2]
- CN 0.25 Poorly populated
- Cdens 0.17 Very loose
- CC3 0.12 Very low quality
- Clit 0.25 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 1566 is a poorly populated, 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, 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 | 86.619 | -0.615 | 14.468 | 35.073 | -46.457 | 25.503 |
| Liu et al. | 2025 | 80.65 | 5.34 | 15.2 | 37.57 | -46.18 | 24.38 |
| Zhang et al. | 2024 | 80.653 | 5.338 | â | â | â | â |
| Cavallo et al. | 2024 | 86.277 | -0.385 | 15.199 | â | â | â |
| Hunt & Reffert | 2023 | 80.653 | 5.338 | 15.199 | 37.573 | -46.175 | 24.382 |
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 | 0.07 | 0.15 | 0.68 | 200 | -0.009 | â | â | â |
| Liu et al. | 2025 | 0.08 | 0.15 | â | 251 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.152(1) | â | â | â |
| Cavallo et al. | 2024 | 0.07 | 0.73 | â | 200 | -0.170 | â | â | â |
| Hunt & Reffert | 2023 | 0.07 | 0.11 | 0.68 | 115 | 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) 200 along with HSC_1580, and of multiple system 56 along with Mamajek_3 and HSC_1580.
Palma et al. (2025)
Part of multiple system G122, along with HSC_1470, HSC_1684, HSC_1347 and HSC_1580.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.