UBC 549
0.31
UTI
0.0
CN
0.15
Cdens
0.5
CC3
0.44
Clit
1.0
Cdup
Radius (P>50% members)
6.2 [arcmin]
- CN 0.0 Sparse
- Cdens 0.15 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.44 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 549 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is poorly studied in the literature.
Note: This object shares a small percentage of members with at least one entry reported in the same catalogue. See table with shared members information.
Relatively close
Moderate extinction
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 252.16 | -46.947 | 0.344 | -0.804 | -1.923 | â |
| Almeida et al. | 2025 | 252.158 | -46.919 | â | â | â | â |
| Hunt & Reffert | 2024 | 252.2 | -46.893 | 0.366 | -0.829 | -1.926 | -44.478 |
| Cavallo et al. | 2024 | 252.196 | -46.894 | 0.364 | â | â | â |
| Hunt & Reffert | 2023 | 252.2 | -46.893 | 0.366 | -0.829 | -1.926 | -44.478 |
| Dias et al. | 2021 | 252.158 | -46.919 | 0.327 | -0.788 | -1.924 | â |
| Cantat-Gaudin et al. | 2020 | 252.156 | -46.965 | 0.311 | -0.807 | -1.925 | â |
| Castro-Ginard et al. | 2020 | 252.154 | -46.94 | 0.313 | -0.803 | -1.928 | 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 | 3.13 | 2.42 | â | 7 | â | 614 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 344* | â | â |
| Cavallo et al. | 2024 | 2.05 | 2.78 | â | 43 | -0.110 | â | â | â |
| Hunt & Reffert | 2023 | 2.53 | 2.94 | 2.25 | 34 | â | â | â | â |
| Dias et al. | 2021 | 3.13 | 2.42 | â | 7 | 0.454 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.90 | 1.92 | â | 85 | 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.