UBC 494
0.71
UTI
0.7
CN
1.0
Cdens
1.0
CC3
0.44
Clit
1.0
Cdup
Radius (P>50% members)
2.7 [arcmin]
- CN 0.7 Moderately populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.44 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 494 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster (see Parameters). It is poorly studied in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Distant
Moderate extinction
Massive
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 | 143.881 | -57.316 | 0.241 | -5.188 | 3.71 | 18.067 |
| Li et al. | 2025 | 143.863 | -57.313 | 0.227 | -5.181 | 3.687 | â |
| Hu & Soubiran | 2025 | 143.883 | -57.322 | â | â | â | â |
| Hunt & Reffert | 2024 | 143.88 | -57.313 | 0.244 | -5.172 | 3.726 | 28.46 |
| Cavallo et al. | 2024 | 143.883 | -57.323 | 0.248 | â | â | â |
| Hunt & Reffert | 2023 | 143.88 | -57.313 | 0.244 | -5.172 | 3.726 | 28.46 |
| Cantat-Gaudin et al. | 2020 | 143.863 | -57.313 | 0.227 | -5.181 | 3.687 | â |
| Castro-Ginard et al. | 2020 | 143.834 | -57.321 | 0.228 | -5.187 | 3.685 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Li et al. | 2025 | 3.91 | 2.18 | â | 430 | -0.051 | â | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.140* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 1224* | â | â |
| Cavallo et al. | 2024 | 3.42 | 2.13 | â | 708 | 0.000 | â | â | â |
| Hunt & Reffert | 2023 | 3.71 | 1.95 | 1.91 | 486 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 3.53 | 1.79 | â | 692 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.