UBC 432
0.44
UTI
0.53
CN
0.35
Cdens
0.75
CC3
0.29
Clit
1.0
Cdup
Nm (P>50%)
56
Core radius and density
1.8 [pc], 1.7 [pc-2]
- CN 0.53 Moderately populated
- Cdens 0.35 Loose
- CC3 0.75 High quality
- Clit 0.29 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
UBC 432 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, above 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 and metallicity parameters (see Parameters). It is poorly studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 79.044 | 39.528 | 0.339 | 0.275 | -1.915 | â |
| Almeida et al. | 2025 | 79.035 | 39.529 | â | â | â | â |
| Zhang et al. | 2024 | 79.056 | 39.537 | â | â | â | â |
| Hunt & Reffert | 2024 | 79.056 | 39.537 | 0.324 | 0.271 | -1.933 | â |
| Cavallo et al. | 2024 | 79.044 | 39.525 | 0.327 | â | â | â |
| Hunt & Reffert | 2023 | 79.056 | 39.537 | 0.324 | 0.271 | -1.933 | â |
| Jadhav & Subramaniam | 2021 | 79.031 | 39.518 | â | â | â | â |
| Dias et al. | 2021 | 79.035 | 39.529 | 0.309 | 0.36 | -1.884 | â |
| Cantat-Gaudin et al. | 2020 | 79.031 | 39.518 | 0.327 | 0.323 | -1.876 | â |
| Castro-Ginard et al. | 2020 | 79.04 | 39.52 | 0.331 | 0.321 | -1.878 | â |
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 | 2.69 | 1.62 | 0.55 | 110 | -0.074 | 469 | â | 0 |
| Liu et al. | 2025 | 5.45 | 0.57 | â | 214 | â | â | â | â |
| Almeida et al. | 2025 | 2.63 | 1.90 | â | 14 | â | 557 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.074(1) | â | â | â |
| Hunt & Reffert | 2024 | 2.69 | 1.62 | 0.55 | 110 | â | 469(1) | â | â |
| Cavallo et al. | 2024 | 2.61 | 1.62 | â | 324 | 0.220 | â | â | â |
| Hunt & Reffert | 2023 | 2.69 | 1.62 | 0.55 | 110 | â | â | â | â |
| Jadhav & Subramaniam | 2021 | 2.91 | 1.27 | â | 331 | â | 241 | â | 0(1) |
| Dias et al. | 2021 | 2.63 | 1.90 | â | 14 | -0.091 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.91 | 1.27 | â | 331 | â | â | â | â |
| Kounkel et al. | 2020 | 3.04 | 1.99 | â | 25 | 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) 278 along with NGC_1857.
Palma et al. (2025)
Classified as optical pair P543, along with NGC_1857.
Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit. Silver sample.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).