UBC 518
0.33
UTI
0.42
CN
0.1
Cdens
0.75
CC3
0.19
Clit
1.0
Cdup
Nm (P>50%)
42
Core radius and density
2.1 [pc], 0.5 [pc-2]
- CN 0.42 Poorly populated
- Cdens 0.1 Very loose
- CC3 0.75 High quality
- Clit 0.19 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 518 is a poorly populated, very loose object of high 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, young cluster, but with a large variance across recent sources for the age parameter (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 | 184.501 | -62.952 | 0.289 | -5.57 | 0.112 | -26.752 |
| Almeida et al. | 2025 | 184.559 | -62.989 | â | â | â | â |
| Hunt & Reffert | 2024 | 184.501 | -62.935 | 0.295 | -5.571 | 0.181 | 14.636 |
| Cavallo et al. | 2024 | 184.466 | -62.998 | 0.291 | â | â | â |
| Hunt & Reffert | 2023 | 184.501 | -62.935 | 0.295 | -5.571 | 0.181 | 14.636 |
| Dias et al. | 2021 | 184.559 | -62.989 | 0.261 | -5.559 | 0.124 | â |
| Cantat-Gaudin et al. | 2020 | 184.56 | -62.969 | 0.265 | -5.564 | 0.091 | â |
| Castro-Ginard et al. | 2020 | 184.578 | -62.984 | 0.265 | -5.552 | 0.104 | 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 | 3.03 | 1.75 | 1.94 | 69 | 0.167 | 650 | â | â |
| Almeida et al. | 2025 | 3.76 | 1.86 | â | 12 | â | 689 | â | â |
| Hunt & Reffert | 2024 | 3.03 | 1.75 | 1.94 | 69 | â | 610(1) | â | â |
| Cavallo et al. | 2024 | 2.86 | 1.68 | â | 195 | 0.100 | â | â | â |
| Hunt & Reffert | 2023 | 3.03 | 1.75 | 1.94 | 69 | â | â | â | â |
| Dias et al. | 2021 | 3.76 | 1.86 | â | 12 | 0.233 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 3.40 | 1.61 | â | 30 | â | â | â | â |
| Kounkel et al. | 2020 | 2.86 | 1.58 | â | 71 | 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: good fit. Isochrone match: good fit.
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).