HSC 432
0.15
UTI
0.0
CN
0.11
Cdens
0.5
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
2.1 [pc], 0.5 [pc-2]
- CN 0.0 Sparse
- Cdens 0.11 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.06 Rarely 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 432 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age 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 | 293.837 | 16.463 | 0.343 | -1.789 | -6.361 | 25.972 |
| Hu & Soubiran | 2025 | 293.849 | 16.476 | â | â | â | â |
| Hunt & Reffert | 2024 | 293.83 | 16.477 | 0.341 | -1.787 | -6.328 | 25.833 |
| Cavallo et al. | 2024 | 293.849 | 16.476 | 0.342 | â | â | â |
| Hunt & Reffert | 2023 | 293.83 | 16.477 | 0.341 | -1.787 | -6.328 | 25.833 |
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 | 2.7 | 2.66 | 1.1 | 156 | 0.180 | 394 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | 0.160(5) | â | â | â |
| Hunt & Reffert | 2024 | 2.70 | 2.66 | 1.10 | 156 | â | 394(1) | â | â |
| Cavallo et al. | 2024 | 2.69 | 2.23 | â | 550 | 0.200 | â | â | â |
| Hunt & Reffert | 2023 | 2.70 | 2.66 | 1.10 | 156 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as optical pair P503, along with HSC_430.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.97 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.97 (50th percentile).