UBC 659
0.20
UTI
0.0
CN
0.3
Cdens
0.38
CC3
0.16
Clit
1.0
Cdup
Nm (P>50%)
24
Core radius and density
1.2 [pc], 1.5 [pc-2]
- CN 0.0 Sparse
- Cdens 0.3 Loose
- CC3 0.38 Low 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 659 is a sparse, loose object of low 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, very young cluster (see Parameters). It is rarely studied in the literature.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 167.31 | -60.682 | 0.381 | -6.265 | 1.378 | -11.66 |
| Hunt & Reffert | 2024 | 167.31 | -60.671 | 0.382 | -6.211 | 1.398 | â |
| Celli et al. | 2024 | 167.285 | -60.687 | â | â | â | â |
| Cavallo et al. | 2024 | 167.293 | -60.662 | 0.382 | â | â | â |
| Hunt & Reffert | 2023 | 167.31 | -60.671 | 0.382 | -6.211 | 1.398 | â |
| Cantat-Gaudin et al. | 2020 | 167.285 | -60.687 | 0.367 | -6.297 | 1.387 | â |
| Castro-Ginard et al. | 2020 | 167.228 | -60.695 | 0.367 | -6.298 | 1.395 | 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 | 2.36 | 1.62 | 0.98 | 19 | -0.420 | 309 | â | â |
| Hunt & Reffert | 2024 | 3.32 | 1.62 | 0.98 | 8 | â | 408(1) | â | â |
| Celli et al. | 2024 | â | â | â | 28 | â | 210 | â | â |
| Cavallo et al. | 2024 | 2.18 | 1.72 | â | 10 | -0.420 | â | â | â |
| Hunt & Reffert | 2023 | 3.32 | 1.62 | 0.98 | 8 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 2.36 | 1.09 | â | 28 | â | â | â | â |
| Kounkel et al. | 2020 | 1.66 | 2.14 | â | 44 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G154, along with NGC_3590, NGC_3572, ASCC_65 and HSC_2406.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).