UBC 285
0.47
UTI
0.76
CN
0.5
Cdens
0.75
CC3
0.16
Clit
1.0
Cdup
Nm (P>50%)
130
Core radius and density
2.1 [pc], 2.5 [pc-2]
- CN 0.76 Rich
- Cdens 0.5 Moderately dense
- CC3 0.75 High quality
- Clit 0.16 Rarely 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 285 is a rich, moderately dense object of 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 (see Parameters). It is rarely studied in the literature.
Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 184.717 | -65.425 | 0.564 | -6.246 | -0.694 | -2.597 |
| Li et al. | 2025 | 184.671 | -65.42 | 0.568 | -6.242 | -0.711 | â |
| Hunt & Reffert | 2024 | 184.675 | -65.442 | 0.558 | -6.248 | -0.676 | -9.067 |
| Cavallo et al. | 2024 | 184.747 | -65.42 | 0.563 | â | â | â |
| Hunt & Reffert | 2023 | 184.675 | -65.442 | 0.558 | -6.248 | -0.676 | -9.067 |
| Cantat-Gaudin et al. | 2020 | 184.671 | -65.42 | 0.568 | -6.242 | -0.711 | â |
| Castro-Ginard et al. | 2020 | 184.695 | -65.419 | 0.568 | -6.232 | -0.713 | 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 | 1.68 | 0.52 | 0.64 | 246 | 0.137 | 592 | â | â |
| Li et al. | 2025 | 1.69 | 0.55 | â | 233 | 0.144 | â | â | â |
| Hunt & Reffert | 2024 | 1.68 | 0.52 | 0.64 | 259 | â | 592(1) | â | â |
| Cavallo et al. | 2024 | 1.68 | 0.57 | â | 288 | 0.130 | â | â | â |
| Hunt & Reffert | 2023 | 1.68 | 0.52 | 0.64 | 259 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 1.64 | 0.45 | â | 62 | â | â | â | â |
| Kounkel et al. | 2020 | 1.69 | 0.48 | â | 68 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).