UBC 593
0.24
UTI
0.0
CN
0.12
Cdens
0.75
CC3
0.16
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
2.3 [pc], 0.6 [pc-2]
- CN 0.0 Sparse
- Cdens 0.12 Very loose
- 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 593 is a sparse, very loose 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.
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 | 346.354 | 55.082 | 0.513 | -2.429 | -3.738 | -51.527 |
| Hu & Soubiran | 2025 | 346.379 | 55.081 | â | â | â | â |
| Hunt & Reffert | 2024 | 346.355 | 55.132 | 0.516 | -2.43 | -3.716 | -65.07 |
| Cavallo et al. | 2024 | 346.379 | 55.081 | 0.517 | â | â | â |
| Hunt & Reffert | 2023 | 346.355 | 55.132 | 0.516 | -2.43 | -3.716 | -65.07 |
| Cantat-Gaudin et al. | 2020 | 346.355 | 55.082 | 0.513 | -2.438 | -3.693 | â |
| Castro-Ginard et al. | 2020 | 346.382 | 55.075 | 0.511 | -2.432 | -3.689 | 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 | 1.88 | 0.9 | 0.78 | 454 | 0.075 | 123 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.070(5) | â | â | â |
| Hunt & Reffert | 2024 | 1.88 | 0.90 | 0.78 | 454 | â | 123(1) | â | â |
| Cavallo et al. | 2024 | 1.91 | 0.86 | â | 1000 | 0.220 | â | â | â |
| Hunt & Reffert | 2023 | 1.88 | 0.90 | 0.78 | 454 | â | â | â | â |
| Kounkel et al. | 2020 | 1.64 | 1.83 | â | 126 | 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).
Dias et al. (2021)
Dubious open cluster.