UBC 33
0.44
UTI
0.62
CN
0.21
Cdens
0.75
CC3
0.31
Clit
1.0
Cdup
Nm (P>50%)
74
Core radius and density
3.0 [pc], 1.1 [pc-2]
- CN 0.62 Moderately populated
- Cdens 0.21 Very loose
- CC3 0.75 High quality
- Clit 0.31 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 33 is a moderately populated, very loose 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, intermediate-age cluster (see Parameters). It is poorly studied in the literature.
Note: This object shares a large 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 | 7.399 | 60.512 | 0.646 | -0.946 | -0.51 | -31.802 |
| Hunt & Reffert | 2024 | 7.325 | 60.471 | 0.646 | -0.937 | -0.547 | -36.855 |
| Cavallo et al. | 2024 | 7.436 | 60.508 | 0.647 | â | â | â |
| Hunt & Reffert | 2023 | 7.325 | 60.471 | 0.646 | -0.937 | -0.547 | -36.855 |
| Cantat-Gaudin et al. | 2020 | 7.36 | 60.498 | 0.627 | -0.928 | -0.443 | â |
| Cantat-Gaudin & Anders | 2020 | 7.36 | 60.498 | 0.627 | -0.928 | -0.443 | â |
| Castro-Ginard et al. | 2019 | 7.394 | 60.491 | 0.626 | -0.94 | -0.456 | 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 | 1.47 | 1.65 | 1.335 | 132 | 0.190 | 403 | â | â |
| Hunt & Reffert | 2024 | 1.46 | 1.65 | 1.34 | 74 | â | 403(1) | â | â |
| Cavallo et al. | 2024 | 1.48 | 1.77 | â | 166 | 0.190 | â | â | â |
| Hunt & Reffert | 2023 | 1.46 | 1.65 | 1.33 | 74 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 1.58 | 1.54 | â | 138 | â | â | â | â |
| Kounkel et al. | 2020 | 1.41 | 1.87 | â | 132 | â | â | â | â |
| Cantat-Gaudin & Anders | 2020 | 1.52 | â | â | â | 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: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hu et al. (2021)
Ellipticities (core, all): e_core=0.1689, e_all=0.2756.