UBC 487
0.49
UTI
0.37
CN
0.73
Cdens
0.75
CC3
0.29
Clit
1.0
Cdup
Nm (P>50%)
37
Core radius and density
1.0 [pc], 3.7 [pc-2]
- CN 0.37 Poorly populated
- Cdens 0.73 Moderately dense
- CC3 0.75 High quality
- Clit 0.29 Poorly studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
UBC 487 is a poorly populated, moderately 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 poorly studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 1.85 | 1.84 | 1.58 | 24 | 0.194 | 297 | â | â |
| Liu et al. | 2025 | 4.51 | 0.71 | â | 9 | â | â | â | â |
| 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 | 1.81 | 1.99 | 1.58 | 24 | â | 298(1) | 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 |
| Kounkel et al. | 2020 | 2.54 | 1.81 | â | 5 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 376 along with UBC_251.
Palma et al. (2025)
Classified as optical pair P602, along with UBC_251.
Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: good fit.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.95 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.95 (50th percentile).