UBC 536
0.40
UTI
0.46
CN
0.36
Cdens
0.75
CC3
0.23
Clit
1.0
Cdup
Nm (P>50%)
46
Core radius and density
1.0 [pc], 1.8 [pc-2]
- CN 0.46 Poorly populated
- Cdens 0.36 Loose
- CC3 0.75 High quality
- Clit 0.23 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 536 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age and metallicity parameters (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 | 237.667 | -55.633 | 0.52 | -3.368 | -4.761 | -44.476 |
| Li et al. | 2025 | 237.68 | -55.632 | 0.498 | -3.355 | -4.77 | â |
| Almeida et al. | 2025 | 237.673 | -55.617 | â | â | â | â |
| Hunt & Reffert | 2024 | 237.639 | -55.627 | 0.527 | -3.392 | -4.748 | -44.49 |
| Cavallo et al. | 2024 | 237.665 | -55.614 | 0.526 | â | â | â |
| Hunt & Reffert | 2023 | 237.639 | -55.627 | 0.527 | -3.392 | -4.748 | -44.49 |
| Dias et al. | 2021 | 237.673 | -55.617 | 0.499 | -3.334 | -4.758 | â |
| Cantat-Gaudin et al. | 2020 | 237.68 | -55.632 | 0.498 | -3.355 | -4.77 | â |
| Castro-Ginard et al. | 2020 | 237.671 | -55.62 | 0.496 | -3.342 | -4.774 | 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 | 1.89 | 3.15 | 2.04 | 31 | 0.271 | 424 | â | â |
| Li et al. | 2025 | 0.70 | 1.59 | â | 2236 | 0.030 | â | â | â |
| Almeida et al. | 2025 | 1.98 | 2.97 | â | 24 | â | 320 | â | â |
| Hunt & Reffert | 2024 | 1.78 | 3.33 | 2.04 | 31 | â | 527(1) | â | â |
| Cavallo et al. | 2024 | 1.85 | 3.35 | â | 87 | 0.440 | â | â | â |
| Hunt & Reffert | 2023 | 1.78 | 3.33 | 2.04 | 31 | â | â | â | â |
| Dias et al. | 2021 | 1.98 | 2.97 | â | 24 | 0.271 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 1.99 | 2.96 | â | 32 | â | â | â | â |
| Kounkel et al. | 2020 | 1.93 | 3.36 | â | 12 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.89 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.89 (50th percentile).