UBC 445
0.44
UTI
0.57
CN
0.28
Cdens
0.75
CC3
0.29
Clit
1.0
Cdup
Nm (P>50%)
65
Core radius and density
2.0 [pc], 1.4 [pc-2]
- CN 0.57 Moderately populated
- Cdens 0.28 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 445 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, above 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 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 | 108.494 | -6.578 | 0.351 | -0.966 | -1.324 | 41.49 |
| Li et al. | 2025 | 108.501 | -6.563 | 0.347 | -0.916 | -1.322 | â |
| Almeida et al. | 2025 | 108.495 | -6.59 | â | â | â | â |
| Hunt & Reffert | 2024 | 108.514 | -6.568 | 0.359 | -0.963 | -1.306 | 33.244 |
| Cavallo et al. | 2024 | 108.487 | -6.586 | 0.356 | â | â | â |
| Hunt & Reffert | 2023 | 108.514 | -6.568 | 0.359 | -0.963 | -1.306 | 33.244 |
| Almeida et al. | 2023 | 108.491 | -6.596 | â | â | â | â |
| Jadhav & Subramaniam | 2021 | 108.501 | -6.563 | â | â | â | â |
| Dias et al. | 2021 | 108.495 | -6.59 | 0.35 | -0.883 | -1.325 | â |
| Cantat-Gaudin et al. | 2020 | 108.501 | -6.563 | 0.347 | -0.916 | -1.322 | â |
| Castro-Ginard et al. | 2020 | 108.495 | -6.567 | 0.348 | -0.899 | -1.308 | 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 | 2.595 | 0.805 | 1.06 | 408 | -0.111 | 314 | 0.53 | 0 |
| Li et al. | 2025 | 2.91 | 0.77 | â | 470 | 0.136 | â | â | â |
| Almeida et al. | 2025 | 2.66 | 1.07 | â | 380 | â | 339 | â | â |
| Hunt & Reffert | 2024 | 2.53 | 0.39 | 1.06 | 573 | â | 305(1) | â | â |
| Cavallo et al. | 2024 | 2.47 | 1.01 | â | 437 | -0.180 | â | â | â |
| Hunt & Reffert | 2023 | 2.53 | 0.40 | 1.06 | 573 | â | â | â | â |
| Almeida et al. | 2023 | 2.45 | 0.84 | â | 592 | -0.182 | 323(1) | 0.53 | â |
| Jadhav & Subramaniam | 2021 | 2.75 | 0.58 | â | 324 | â | 251 | â | 0(1) |
| Dias et al. | 2021 | 2.66 | 1.07 | â | 380 | -0.041 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.75 | 0.58 | â | 324 | â | â | â | â |
| Kounkel et al. | 2020 | 2.34 | 1.50 | â | 105 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit. Silver sample.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).