UBC 566
0.63
UTI
0.87
CN
1.0
Cdens
1.0
CC3
0.13
Clit
1.0
Cdup
Nm (P>50%)
425
Core radius and density
1.3 [pc], 8.1 [pc-2]
- CN 0.87 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.13 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 566 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a very massive, near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 263.669 | -33.094 | 0.385 | 0.305 | -0.509 | -9.514 |
| Hunt & Reffert | 2024 | 263.68 | -33.099 | 0.39 | 0.303 | -0.494 | -9.907 |
| Cavallo et al. | 2024 | 263.666 | -33.126 | 0.389 | â | â | â |
| Hunt & Reffert | 2023 | 263.68 | -33.099 | 0.39 | 0.303 | -0.494 | -9.907 |
| Cantat-Gaudin et al. | 2020 | 263.681 | -33.102 | 0.378 | 0.252 | -0.517 | â |
| Castro-Ginard et al. | 2020 | 263.687 | -33.112 | 0.386 | 0.238 | -0.513 | 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 | 2.275 | 4.91 | 2.885 | 26 | -0.460 | 9379 | â | â |
| Hunt & Reffert | 2024 | 2.36 | 4.91 | 2.89 | 32 | â | 9379(1) | â | â |
| Cavallo et al. | 2024 | 2.12 | 5.46 | â | 19 | -0.460 | â | â | â |
| Hunt & Reffert | 2023 | 2.36 | 4.91 | 2.88 | 32 | â | â | â | â |
| Kounkel et al. | 2020 | 2.19 | 4.63 | â | 8 | 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 G51, along with UBC_565, Collinder_333, OC_0697 and CWNU_2274.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.23 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.23 (50th percentile).