UBC 10 b
0.53
UTI
0.74
CN
0.07
Cdens
0.75
CC3
0.55
Clit
1.0
Cdup
Nm (P>50%)
98
Core radius and density
4.4 [pc], 0.4 [pc-2]
- CN 0.74 Moderately populated
- Cdens 0.07 Very loose
- CC3 0.75 High quality
- Clit 0.55 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 10 b is a moderately populated, very loose object of high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption and age 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 | 327.105 | 61.08 | 1.023 | -3.432 | -1.906 | -27.87 |
| Li et al. | 2026 | 327.13 | 61.15 | â | â | â | â |
| Liu et al. | 2025 | 327.22 | 61.21 | 1.03 | -3.47 | -1.91 | -24.85 |
| Li et al. | 2025 | 327.047 | 61.032 | 1.015 | -3.471 | -1.859 | â |
| Alfonso et al. | 2024 | 327.182 | 61.2 | 1.003 | -3.424 | -1.878 | â |
| Hunt & Reffert | 2024 | 327.223 | 61.214 | 1.032 | -3.469 | -1.913 | -24.845 |
| Cavallo et al. | 2024 | 327.175 | 61.133 | 1.03 | â | â | â |
| Hunt & Reffert | 2023 | 327.223 | 61.214 | 1.032 | -3.469 | -1.913 | -24.845 |
| He et al. | 2022 | 327.554 | 61.181 | 1.065 | -3.409 | -1.905 | â |
| Cantat-Gaudin et al. | 2020 | 327.047 | 61.032 | 1.015 | -3.471 | -1.859 | â |
| Cantat-Gaudin & Anders | 2020 | 327.047 | 61.032 | 1.015 | -3.471 | -1.859 | â |
| Bica et al. | 2019 | 326.892 | 61.096 | â | â | â | â |
| Castro-Ginard et al. | 2018 | 326.883 | 61.104 | 1.014 | -3.465 | -1.868 | -46.9 |
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 | 0.98 | 1.37 | 1.81 | 56 | 0.010 | 319 | â | â |
| Liu et al. | 2025 | 1.47 | 0.47 | â | 28 | â | â | â | â |
| Li et al. | 2025 | 0.79 | 0.98 | â | 26 | -0.048 | â | â | â |
| Alfonso et al. | 2024 | 1.00 | 1.36 | â | 29 | 0.010 | â | â | â |
| Hunt & Reffert | 2024 | 0.93 | 1.38 | 1.81 | 57 | â | 319(1) | â | â |
| Cavallo et al. | 2024 | 0.98 | 1.53 | â | 12 | 0.180 | â | â | â |
| Hunt & Reffert | 2023 | 0.93 | 1.38 | 1.81 | 57 | â | â | â | â |
| He et al. | 2022 | â | 1.70 | â | 447 | â | â | â | â |
| Tarricq et al. | 2022 | 0.98 | â | â | 56 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 1.00 | 1.36 | â | 56 | â | â | â | â |
| Cantat-Gaudin & Anders | 2020 | 0.96 | â | â | â | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Li et al. (2026)
Tidal & Core radii: r_t=42+/-30.8 [pc], r_c=0.53+/-0.01 [pc]; stars within r_t: N~136
Liu et al. (2025)
Classified as primordial binary cluster 387 along with UPK_172, and of multiple system 77 along with UPK_172 and NGC_7160.
Palma et al. (2025)
Classified as optical pair P527, along with HSC_786.
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).
Hu et al. (2021)
Ellipticities (core, all): e_core=0.115, e_all=0.3624.
Dias et al. (2021)
Likely not a real open cluster.