UBC 487
0.64
UTI
0.37
CN
1.0
Cdens
0.75
CC3
0.55
Clit
1.0
Cdup
Radius (P>50% members)
3.2 [arcmin]
- CN 0.37 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.55 Moderately studied
- Cdup 1.0 Unique
Overview
UBC 487 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is moderately studied in the literature.
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 | 139.681 | -51.6 | 0.525 | -5.784 | 4.158 | â |
| Li et al. | 2025 | 139.691 | -51.6 | 0.499 | -5.812 | 4.14 | â |
| Almeida et al. | 2025 | 139.748 | -51.603 | â | â | â | â |
| Hunt & Reffert | 2024 | 139.681 | -51.588 | 0.528 | -5.787 | 4.181 | â |
| Celli et al. | 2024 | 139.691 | -51.6 | â | â | â | â |
| Cavallo et al. | 2024 | 139.705 | -51.609 | 0.53 | â | â | â |
| Hunt & Reffert | 2023 | 139.681 | -51.588 | 0.528 | -5.787 | 4.181 | â |
| Dias et al. | 2021 | 139.748 | -51.603 | 0.476 | -5.806 | 4.127 | â |
| Cantat-Gaudin et al. | 2020 | 139.691 | -51.6 | 0.499 | -5.812 | 4.14 | â |
| Castro-Ginard et al. | 2020 | 139.716 | -51.6 | 0.499 | -5.807 | 4.126 | 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 | 1.62 | 1.84 | â | 128 | -0.045 | â | â | â |
| Almeida et al. | 2025 | 1.85 | 1.94 | â | 19 | â | 297 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 298* | â | â |
| Celli et al. | 2024 | â | â | â | 26 | â | 205 | â | â |
| Cavallo et al. | 2024 | 1.91 | 1.38 | â | 123 | 0.650 | â | â | â |
| Hunt & Reffert | 2023 | 1.81 | 1.99 | 1.58 | 24 | â | â | â | â |
| Dias et al. | 2021 | 1.85 | 1.94 | â | 19 | 0.194 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 1.83 | 1.39 | â | 26 | 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: good fit.
Cavallo et al. (2024)
Silver sample.