UBC 1055
0.53
UTI
0.44
CN
0.59
Cdens
1.0
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
3.5 [arcmin]
- CN 0.44 Poorly populated
- Cdens 0.59 Moderately dense
- CC3 1.0 Very high quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 1055 is a poorly populated, moderately dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.
Distant
Moderate extinction
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 285.409 | 11.734 | 0.264 | -1.647 | -5.558 | 35.745 |
| Hu & Soubiran | 2025 | 285.41 | 11.735 | â | â | â | â |
| Hunt & Reffert | 2024 | 285.406 | 11.73 | 0.268 | -1.631 | -5.551 | 37.072 |
| Cavallo et al. | 2024 | 285.41 | 11.735 | 0.262 | â | â | â |
| Hunt & Reffert | 2023 | 285.406 | 11.73 | 0.268 | -1.631 | -5.551 | 37.072 |
| Castro-Ginard et al. | 2022 | 285.38 | 11.76 | 0.27 | -1.64 | -5.55 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | 0.040* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 643* | â | â |
| Cavallo et al. | 2024 | 3.13 | 1.90 | â | 1318 | 0.080 | â | â | â |
| Hunt & Reffert | 2023 | 3.44 | 2.70 | 2.15 | 305 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 3.60 | 1.93 | â | 832 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.