UBC 1121
0.29
UTI
0.4
CN
0.22
Cdens
0.62
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
40
Core radius and density
2.2 [pc], 1.1 [pc-2]
- CN 0.4 Poorly populated
- Cdens 0.22 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.1 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 1121 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (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 | 313.65 | 47.025 | 0.288 | -4.085 | -4.71 | -14.877 |
| Hu & Soubiran | 2025 | 313.656 | 47.016 | â | â | â | â |
| Hunt & Reffert | 2024 | 313.628 | 47.034 | 0.289 | -4.052 | -4.686 | -17.935 |
| Cavallo et al. | 2024 | 313.656 | 47.016 | 0.287 | â | â | â |
| Hunt & Reffert | 2023 | 313.628 | 47.034 | 0.289 | -4.052 | -4.686 | -17.935 |
| Castro-Ginard et al. | 2022 | 313.65 | 47.04 | 0.29 | -4.09 | -4.71 | 6.78 |
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 | 3.13 | 2.55 | 1.87 | 510 | 0.045 | 349 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.070(5) | â | â | â |
| Hunt & Reffert | 2024 | 3.13 | 2.55 | 1.87 | 414 | â | 349(1) | â | â |
| Cavallo et al. | 2024 | 2.73 | 2.66 | â | 813 | 0.160 | â | â | â |
| Hunt & Reffert | 2023 | 3.13 | 2.55 | 1.87 | 414 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 3.75 | 2.08 | â | 607 | 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: 0.05 (50th percentile), true positive (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.05 (50th percentile), true positive (human-assigned).