UBC 107
0.61
UTI
0.78
CN
0.89
Cdens
1.0
CC3
0.19
Clit
1.0
Cdup
Nm (P>50%)
169
Core radius and density
2.1 [pc], 4.4 [pc-2]
- CN 0.78 Rich
- Cdens 0.89 Dense
- CC3 1.0 Very high quality
- Clit 0.19 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
UBC 107 is a rich, dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 279.769 | -4.804 | 0.333 | 0.993 | -1.696 | 36.035 |
| Otto et al. | 2026 | 279.768 | -4.797 | â | 0.96 | -1.65 | 35.2 |
| Li et al. | 2025 | 279.769 | -4.8 | 0.318 | 0.958 | -1.652 | â |
| Hunt & Reffert | 2024 | 279.768 | -4.797 | 0.339 | 0.983 | -1.703 | 35.312 |
| Cavallo et al. | 2024 | 279.769 | -4.801 | 0.339 | â | â | â |
| Hunt & Reffert | 2023 | 279.768 | -4.797 | 0.339 | 0.983 | -1.703 | 35.312 |
| Cantat-Gaudin et al. | 2020 | 279.769 | -4.8 | 0.318 | 0.958 | -1.652 | â |
| Castro-Ginard et al. | 2020 | 279.763 | -4.803 | 0.32 | 0.948 | -1.649 | 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 | 2.535 | 2.8 | 1.52 | 259 | -0.045 | 1916 | â | â |
| Otto et al. | 2026 | â | â | â | 234 | 0.060(15) | â | â | â |
| Li et al. | 2025 | 2.34 | 2.63 | â | 582 | -0.045 | â | â | â |
| Hunt & Reffert | 2024 | 2.75 | 2.80 | 1.52 | 259 | â | 1916(1) | â | â |
| Cavallo et al. | 2024 | 1.77 | 3.57 | â | 200 | -1.290 | â | â | â |
| Hunt & Reffert | 2023 | 2.75 | 2.80 | 1.52 | 259 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.50 | 2.69 | â | 234 | â | â | â | â |
| Kounkel et al. | 2020 | 2.57 | 2.89 | â | 646 | 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 P483, along with HSC_271.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).