UBC 1225
0.22
UTI
0.32
CN
0.1
Cdens
0.5
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
32
Core radius and density
2.1 [pc], 0.5 [pc-2]
- CN 0.32 Poorly populated
- Cdens 0.1 Very loose
- CC3 0.5 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 1225 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, but with a large variance across recent sources for the age parameter (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 | 28.922 | 63.779 | 0.315 | -1.408 | -0.467 | -59.757 |
| Hu & Soubiran | 2025 | 28.908 | 63.789 | â | â | â | â |
| Hunt & Reffert | 2024 | 28.937 | 63.78 | 0.321 | -1.375 | -0.46 | -60.788 |
| Cavallo et al. | 2024 | 28.908 | 63.789 | 0.32 | â | â | â |
| Hunt & Reffert | 2023 | 28.937 | 63.78 | 0.321 | -1.375 | -0.46 | -60.788 |
| Castro-Ginard et al. | 2022 | 28.84 | 63.78 | 0.32 | -1.41 | -0.47 | -60.41 |
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 | 2.96 | 2.485 | 1.94 | 470 | 0.075 | 358 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.070(5) | â | â | â |
| Hunt & Reffert | 2024 | 2.96 | 2.74 | 1.94 | 178 | â | 358(1) | â | â |
| Cavallo et al. | 2024 | 2.47 | 2.23 | â | 955 | 0.220 | â | â | â |
| Hunt & Reffert | 2023 | 2.96 | 2.74 | 1.94 | 178 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 3.43 | 2.08 | â | 762 | 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: 0.78 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.78 (50th percentile).