UBC 668
0.73
UTI
0.76
CN
1.0
Cdens
1.0
CC3
0.44
Clit
1.0
Cdup
Radius (P>50% members)
3.7 [arcmin]
- CN 0.76 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.44 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 668 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.
Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.
Relatively close
High extinction
Massive
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 250.676 | -47.997 | 0.33 | -0.611 | -1.081 | -46.209 |
| Almeida et al. | 2025 | 250.66 | -47.997 | â | â | â | â |
| Hunt & Reffert | 2024 | 250.672 | -48.013 | 0.343 | -0.631 | -1.086 | -45.413 |
| Cavallo et al. | 2024 | 250.675 | -48.002 | 0.343 | â | â | â |
| Hunt & Reffert | 2023 | 250.672 | -48.013 | 0.343 | -0.631 | -1.086 | -45.413 |
| Dias et al. | 2021 | 250.66 | -47.997 | 0.311 | -0.566 | -1.031 | -44.385 |
| Cantat-Gaudin et al. | 2020 | 250.674 | -48.01 | 0.307 | -0.538 | -1.053 | â |
| Castro-Ginard et al. | 2020 | 250.657 | -48.001 | 0.305 | -0.539 | -1.056 | 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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Almeida et al. | 2025 | 3.29 | 3.06 | â | 6 | â | 664 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 1447* | â | â |
| Cavallo et al. | 2024 | 2.09 | 3.75 | â | 83 | -0.270 | â | â | â |
| Hunt & Reffert | 2023 | 2.63 | 3.35 | 2.29 | 100 | â | â | â | â |
| Dias et al. | 2021 | 3.29 | 3.06 | â | 6 | 0.520 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.69 | 2.71 | â | 513 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit.
Cavallo et al. (2024)
Gold sample.