UBC 1320
0.23
UTI
0.3
CN
0.2
Cdens
0.38
CC3
0.13
Clit
1.0
Cdup
Nm (P>50%)
30
Core radius and density
2.1 [pc], 1.0 [pc-2]
- CN 0.3 Poorly populated
- Cdens 0.2 Very loose
- CC3 0.38 Low 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 1320 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (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 | 93.33 | 9.536 | 0.381 | 0.033 | -1.277 | 75.717 |
| Zhang et al. | 2024 | 93.345 | 9.538 | â | â | â | â |
| Hunt & Reffert | 2024 | 93.345 | 9.538 | 0.381 | 0.031 | -1.299 | â |
| Cavallo et al. | 2024 | 93.331 | 9.532 | 0.381 | â | â | â |
| Hunt & Reffert | 2023 | 93.345 | 9.538 | 0.381 | 0.031 | -1.299 | â |
| Castro-Ginard et al. | 2022 | 93.34 | 9.54 | 0.39 | 0.04 | -1.29 | 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 | 2.4 | 0.67 | 0.36 | 195 | -0.051 | 169 | â | â |
| Liu et al. | 2025 | 3.63 | 0.34 | â | 155 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.099(1) | â | â | â |
| Hunt & Reffert | 2024 | 2.40 | 0.67 | 0.36 | 213 | â | 169(1) | â | â |
| Cavallo et al. | 2024 | 2.09 | 0.90 | â | 195 | -0.200 | â | â | â |
| Hunt & Reffert | 2023 | 2.40 | 0.67 | 0.36 | 213 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 2.79 | 0.62 | â | 47 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 201 along with HSC_1585.
Palma et al. (2025)
Classified as optical pair P436, along with HSC_1585.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).