UBC 283
0.71
UTI
0.68
CN
1.0
Cdens
1.0
CC3
0.44
Clit
1.0
Cdup
Radius (P>50% members)
4.5 [arcmin]
- CN 0.68 Moderately populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.44 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 283 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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.
Relatively close
Low 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 | 179.638 | -68.691 | 0.732 | -8.965 | -0.728 | -17.896 |
| Li et al. | 2025 | 179.651 | -68.683 | 0.693 | -8.965 | -0.793 | â |
| Hunt & Reffert | 2024 | 179.644 | -68.694 | 0.723 | -8.983 | -0.725 | -3.48 |
| Cavallo et al. | 2024 | 179.599 | -68.68 | 0.726 | â | â | â |
| Hunt & Reffert | 2023 | 179.644 | -68.694 | 0.723 | -8.983 | -0.725 | -3.48 |
| Tarricq et al. | 2022 | 179.651 | -68.688 | 0.74 | -8.976 | -0.716 | â |
| Cantat-Gaudin et al. | 2020 | 179.651 | -68.683 | 0.693 | -8.965 | -0.793 | â |
| Castro-Ginard et al. | 2020 | 179.615 | -68.679 | 0.692 | -8.98 | -0.794 | 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 | 1.15 | 0.73 | â | 525 | -0.375 | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 356* | â | â |
| Cavallo et al. | 2024 | 1.26 | 0.51 | â | 437 | 0.110 | â | â | â |
| Hunt & Reffert | 2023 | 1.30 | 0.38 | 0.92 | 221 | â | â | â | â |
| Tarricq et al. | 2022 | 1.32 | â | â | 347 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 1.37 | 0.48 | â | 316 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.