UBC 648
0.65
UTI
0.6
CN
0.9
Cdens
0.75
CC3
0.5
Clit
1.0
Cdup
Stellar density (N50/rad)
4.5 [N/pc2]
- CN 0.6 Moderately populated
- Cdens 0.9 Very dense
- CC3 0.75 High quality
- Clit 0.5 Moderately 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 648 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a large distance, well above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is moderately studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 142.558 | -34.137 | 0.186 | -4.263 | 1.79 | 7.996 |
| Li et al. | 2025 | 142.543 | -34.136 | 0.172 | -4.289 | 1.811 | â |
| Hu & Soubiran | 2025 | 142.562 | -34.142 | â | â | â | â |
| Almeida et al. | 2025 | 142.543 | -34.144 | â | â | â | â |
| Hunt & Reffert | 2024 | 142.555 | -34.142 | 0.198 | -4.241 | 1.798 | 7.82 |
| Cavallo et al. | 2024 | 142.563 | -34.142 | 0.193 | â | â | â |
| Hunt & Reffert | 2023 | 142.555 | -34.142 | 0.198 | -4.241 | 1.798 | 7.82 |
| Dias et al. | 2021 | 142.543 | -34.144 | 0.186 | -4.258 | 1.799 | â |
| Cantat-Gaudin et al. | 2020 | 142.543 | -34.136 | 0.172 | -4.289 | 1.811 | â |
| Castro-Ginard et al. | 2020 | 142.53 | -34.142 | 0.168 | -4.265 | 1.796 | 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 | 4.52 | 0.53 | 1.11 | 3622 | -0.270 | 439 | â | â |
| Li et al. | 2025 | 4.16 | 0.26 | â | 6515 | -0.146 | â | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.260(5) | â | â | â |
| Almeida et al. | 2025 | 4.82 | 0.60 | â | 3622 | â | 602 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 276(1) | â | â |
| Cavallo et al. | 2024 | 2.87 | 0.67 | â | 8128 | -0.720 | â | â | â |
| Hunt & Reffert | 2023 | 4.22 | 0.24 | 1.11 | 2037 | â | â | â | â |
| Dias et al. | 2021 | 4.82 | 0.60 | â | 3622 | -0.280 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 5.08 | 0.46 | â | 2239 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Almeida et al. (2025)
Mass determination: good fit. Isochrone match: intermediate fit.