UBC 1318
0.36
UTI
0.52
CN
0.3
Cdens
0.75
CC3
0.13
Clit
1.0
Cdup
Nm (P>50%)
53
Core radius and density
1.7 [pc], 1.5 [pc-2]
- CN 0.52 Moderately populated
- Cdens 0.3 Loose
- CC3 0.75 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 1318 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a large distance, well below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity 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 | 91.074 | 9.188 | 0.174 | 0.536 | 0.148 | 32.778 |
| Hu & Soubiran | 2025 | 91.084 | 9.187 | â | â | â | â |
| Zhang et al. | 2024 | 91.073 | 9.184 | â | â | â | â |
| Hunt & Reffert | 2024 | 91.073 | 9.184 | 0.183 | 0.537 | 0.144 | 36.439 |
| Cavallo et al. | 2024 | 91.084 | 9.187 | 0.185 | â | â | â |
| Hunt & Reffert | 2023 | 91.073 | 9.184 | 0.183 | 0.537 | 0.144 | 36.439 |
| Castro-Ginard et al. | 2022 | 91.09 | 9.19 | 0.19 | 0.53 | 0.12 | 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 | 4.53 | 0.47 | 1.06 | 1020 | -0.215 | 313 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.360(5) | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.215(1) | â | â | â |
| Hunt & Reffert | 2024 | 4.53 | 0.37 | 1.06 | 1020 | â | 313(1) | â | â |
| Cavallo et al. | 2024 | 4.39 | 0.57 | â | 1023 | 0.290 | â | â | â |
| Hunt & Reffert | 2023 | 4.53 | 0.37 | 1.06 | 1021 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 5.95 | 0.63 | â | 455 | 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 classes: 0.98 (50th percentile), true positive (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.98 (50th percentile), true positive (human-assigned).