UBC 1312
0.26
UTI
0.28
CN
0.01
Cdens
0.75
CC3
0.13
Clit
1.0
Cdup
Nm (P>50%)
28
Core radius and density
4.0 [pc], 0.06 [pc-2]
- CN 0.28 Poorly populated
- Cdens 0.01 Very 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 1312 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (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 | 98.51 | 18.356 | 0.202 | -0.215 | -0.345 | 10.473 |
| Yang et al. | 2025 | 98.484 | 18.345 | â | â | â | â |
| Zhang et al. | 2024 | 98.484 | 18.345 | â | â | â | â |
| Hunt & Reffert | 2024 | 98.484 | 18.345 | 0.208 | -0.222 | -0.335 | 10.492 |
| Cavallo et al. | 2024 | 98.416 | 18.413 | 0.21 | â | â | â |
| Hunt & Reffert | 2023 | 98.484 | 18.345 | 0.208 | -0.222 | -0.335 | 10.492 |
| Castro-Ginard et al. | 2022 | 98.51 | 18.39 | 0.2 | -0.22 | -0.34 | 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 | 4.32 | 0.905 | 1.42 | 131 | 0.070 | 331 | â | â |
| Yang et al. | 2025 | â | â | â | 132 | -0.350(3) | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.185(1) | â | â | â |
| Hunt & Reffert | 2024 | 4.32 | 0.85 | 1.42 | 131 | â | 331(1) | â | â |
| Cavallo et al. | 2024 | 3.87 | 1.16 | â | 107 | 0.070 | â | â | â |
| Hunt & Reffert | 2023 | 4.32 | 0.85 | 1.42 | 131 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 5.66 | 0.96 | â | 23 | 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: 0.99 (50th percentile), true positive (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).