UPK 369
0.32
UTI
0.0
CN
0.35
Cdens
0.38
CC3
0.45
Clit
1.0
Cdup
Stellar density (N50/rad)
1.7 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.35 Loose
- CC3 0.38 Low quality
- Clit 0.45 Poorly 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
UPK 369 is a sparse, loose object of low C3 quality. Its parallax locates it at a close distance, near 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 metallicity parameter (see Parameters). It is poorly studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 83.543 | 30.342 | 1.363 | 0.017 | -2.901 | -14.187 |
| Zhang et al. | 2024 | 83.505 | 30.351 | â | â | â | â |
| Hunt & Reffert | 2024 | 83.505 | 30.351 | 1.323 | 0.1 | -2.915 | -25.502 |
| Cavallo et al. | 2024 | 83.62 | 30.28 | 1.322 | â | â | â |
| Hunt & Reffert | 2023 | 83.505 | 30.351 | 1.323 | 0.1 | -2.915 | -25.502 |
| Cantat-Gaudin et al. | 2020 | 83.565 | 30.475 | 1.35 | 0.038 | -2.865 | â |
| Cantat-Gaudin & Anders | 2020 | 83.559 | 30.632 | 1.344 | 0.07 | -2.749 | â |
| Sim et al. | 2019 | 83.578 | 30.441 | â | 0.08 | -2.89 | 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 | 0.73 | 1.39 | 0.87 | 172 | 0.124 | 88 | â | â |
| Liu et al. | 2025 | 1.56 | 0.57 | â | 87 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.042(1) | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 88(1) | â | â |
| Cavallo et al. | 2024 | 0.76 | 1.50 | â | 209 | 0.290 | â | â | â |
| Hunt & Reffert | 2023 | 0.71 | 1.39 | 0.87 | 136 | â | â | â | â |
| Cantat-Gaudin & Anders | 2020 | 0.73 | â | â | â | â | â | â | â |
| Sim et al. | 2019 | 0.73 | â | â | 708 | 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) 192 along with HSC_1385.
Palma et al. (2025)
Classified as optical pair P427, along with HSC_1385.
Cavallo et al. (2024)
Gold sample.