UBC 166
0.58
UTI
0.43
CN
0.62
Cdens
0.75
CC3
0.55
Clit
1.0
Cdup
Stellar density (N50/rad)
3.1 [N/pc2]
- CN 0.43 Poorly populated
- Cdens 0.62 Moderately dense
- 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 166 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (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 | 334.238 | 54.212 | 0.298 | -3.627 | -2.995 | â |
| Li et al. | 2025 | 334.263 | 54.229 | 0.311 | -3.634 | -2.967 | â |
| Almeida et al. | 2025 | 334.258 | 54.245 | â | â | â | â |
| Hunt & Reffert | 2024 | 334.246 | 54.194 | 0.27 | -3.57 | -3.015 | -61.825 |
| Cavallo et al. | 2024 | 334.243 | 54.208 | 0.27 | â | â | â |
| Hunt & Reffert | 2023 | 334.246 | 54.194 | 0.27 | -3.57 | -3.015 | -61.825 |
| Almeida et al. | 2023 | 334.247 | 54.255 | â | â | â | â |
| Dias et al. | 2021 | 334.258 | 54.245 | 0.302 | -3.613 | -2.994 | â |
| Cantat-Gaudin et al. | 2020 | 334.263 | 54.229 | 0.311 | -3.634 | -2.967 | â |
| Castro-Ginard et al. | 2020 | 334.264 | 54.233 | 0.31 | -3.63 | -2.982 | 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 | 3.095 | 1.465 | 1.05 | 28 | -0.025 | 792 | 0.54 | â |
| Liu et al. | 2025 | 5.60 | 0.51 | â | 28 | â | â | â | â |
| Li et al. | 2025 | 3.12 | 1.40 | â | 45 | -0.045 | â | â | â |
| Almeida et al. | 2025 | 3.07 | 1.49 | â | 17 | â | 792 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 539(1) | â | â |
| Cavallo et al. | 2024 | 3.02 | 1.51 | â | 27 | 0.010 | â | â | â |
| Hunt & Reffert | 2023 | 3.95 | 1.45 | 1.05 | 31 | â | â | â | â |
| Almeida et al. | 2023 | 2.96 | 1.48 | â | 24 | -0.037 | 1287(1) | 0.54 | â |
| Dias et al. | 2021 | 3.07 | 1.49 | â | 17 | -0.013 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 3.13 | 0.91 | â | 34 | 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 primordial binary cluster 373 along with UBC_164.
Palma et al. (2025)
Classified as optical pair P599, along with UBC_164.
Cavallo et al. (2024)
Gold sample.
Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit.